# US 11,439,414 B2 · Medical instrumentarium comprising sawing template

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- Number: US 11,439,414 B2
- Document ID: US11439414B2
- Status: Granted
- Kind: B2
- Application number: 16/516,354
- Filed: 2019-07-19
- Published: 2019-11-07
- Granted: 2022-09-13
- Earliest claimed: 2017-01-20
- Assignees: Aesculap AG
- Applicants: Aesculap AG
- Inventors: Uwe Bader; Anil Varsani; Stephanie Stoll
- Web page: https://patentgrep.com/patent/US11439414B2

## CPC

- A61B 17/15: Guides therefor
- A61B 17/1742: {for the hip}
- A61B 17/1659: {Surgical rasps, files, planes, or scrapers}
- A61B 17/1664: {for the hip}
- A61F 2/4603: {for insertion or extraction of endoprosthetic joints or of accessories thereof}
- A61B 17/1668: {for the upper femur (A61B17/164 takes precedence)}
- A61F 2250/0097: Visible markings, e.g. indicia
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)

## Abstract

The invention relates to a medical instrumentarium for implanting a hip joint endoprosthesis, which instrumentarium comprises at least one sawing template with at least one guide slot for a saw blade, wherein the sawing template comprises at least one first coupling element for temporarily coupling the sawing template to a second coupling element of a rasp body of a prosthesis rasp in a coupling position.

## Claims

### Claim 1

A medical instrumentarium for implanting a hip joint endoprosthesis, which instrumentarium comprises at least one sawing template with at least one guide slot for a saw blade, wherein:
the sawing template comprises at least one first coupling element for temporarily coupling the sawing template to a second coupling element of a rasp body of a prosthesis rasp in a coupling position,
the sawing template comprises a coupling body and a template body,
the at least one first coupling element is arranged or formed on the coupling body,
the at least one guide slot is arranged or formed on the template body,
the medical instrumentarium further comprises a coupling device for temporarily coupling the coupling body and the template body in a coupling position, and
the coupling device is configured in the form of a latching or snapping connecting device and comprises latching or snapping elements which are in engagement with each other in the coupling position.

### Claim 2 (depends on 1)

The medical instrumentarium in accordance with claim 1, wherein:
a) the medical instrumentarium further comprises a rasp body of a prosthesis rasp, which rasp body comprises a second coupling element of a coupling device comprising the first and the second coupling element, or
b) the medical instrumentarium further comprises a rasp body of a prosthesis rasp, which rasp body comprises a second coupling element of a coupling device comprising the first and the second coupling element, wherein the first and second coupling elements are in engagement with each other in at least one of a force- and positive-locking manner in the coupling position, and they are completely separated from each other in a cleaning position.

### Claim 3 (depends on 2)

The medical instrumentarium in accordance with claim 2, wherein the coupling device defines a coupling longitudinal axis which is defined in particular by at least one of the first and second coupling element.

### Claim 4 (depends on 2)

The medical instrumentarium in accordance with claim 2, wherein the first and second coupling elements are non-rotatably coupled to each other in the coupling position.

### Claim 5 (depends on 1)

The medical instrumentarium in accordance with claim 1, wherein:
a) the first coupling element is configured in the form of a coupling element receptacle, or
b) the first coupling element is configured in the form of a coupling element receptacle, wherein the second coupling element is configured in the form of a coupling projection corresponding to the coupling element receptacle.

### Claim 6 (depends on 3)

The medical instrumentarium in accordance with claim 3, wherein:
the coupling body and the template body in the coupling position are mounted on each other so as to be rotatable relative to each other about a rotary axis defined by the coupling device, and
a) the coupling longitudinal axis runs parallel or substantially parallel to the rotary axis, or
b) the rotary axis defines the coupling longitudinal axis.

### Claim 7 (depends on 1)

The medical instrumentarium in accordance with claim 1, wherein a first securing element of a securing device is associated with the first coupling element, which first securing element in the coupling position is in engagement in at least one of a force- and positive-locking manner in a securing position with a second securing element arranged on the rasp body.

### Claim 8 (depends on 7)

The medical instrumentarium in accordance with claim 7, wherein at least one of:
a) the first and the second securing element are configured in the form of cooperating latching members, or
the first and the second securing element are configured in the form of cooperating latching members, wherein one of the two latching members is configured in the form of a latching projection, and the other one of the two latching members is configured in the form of a corresponding latching recess, and
b) one of the two securing elements is arranged or formed on the first coupling element, and the other one of the two securing elements is arranged or formed on the second coupling element.

### Claim 9 (depends on 7)

The medical instrumentarium in accordance with claim 7, wherein the first and the second securing element are configured in the form of cooperating latching members, wherein one of the two latching members is configured in the form of a latching projection, and the other one of the two latching members is configured in the form of a corresponding latching recess, wherein the latching projection is configured in such a way that, when bringing the first coupling element and the second coupling element into engagement, it is deflected from a base position into a deflected position, and only when the coupling device adopts the coupling position is it able to engage into the latching recess from the deflected position, such that the securing device adopts the securing position.

### Claim 10 (depends on 1)

The medical instrumentarium in accordance with claim 1, wherein the sawing template comprises two, three, four or more guide slots, wherein the guide slots are arranged or formed in parallel to each other.

### Claim 11 (depends on 1)

The medical instrumentarium in accordance with claim 1, wherein:
the coupling device comprises first and second coupling elements,
the first and second coupling elements are arranged or formed on the coupling body on the one hand and on the template body on the other hand,
the first and second coupling elements in the coupling position are in engagement in at least one of a force- and positive-locking manner, and
the coupling body and the template body in the coupling position are mounted on each other so as to be rotatable relative to each other about a rotary axis defined by the coupling device.

### Claim 12

A medical instrumentarium for implanting a hip joint endoprosthesis, which instrumentarium comprises at least one sawing template with at least one guide slot for a saw blade, wherein the sawing template comprises at least one first coupling element for temporarily coupling the sawing template to a second coupling element of a rasp body of a prosthesis rasp in a coupling position, wherein:
the sawing template comprises a coupling body and a template body,
the at least one first coupling element is arranged or formed on the coupling body,
the at least one guide slot is arranged or formed on the template body,
the medical instrumentarium further comprises a coupling device for temporarily coupling the coupling body and the template body in a coupling position,
the coupling device comprises first and second coupling elements, the first and second coupling elements are arranged or formed on the coupling body on the one hand and on the template body on the other hand, and the first and second coupling elements in the coupling position are in engagement in at least one of a force- and positive-locking manner, and
the coupling body and the template body in the coupling position are mounted on each other so as to be rotatable relative to each other about a rotary axis defined by the coupling device.

### Claim 13 (depends on 12)

The medical instrumentarium in accordance with claim 12, wherein the first and second coupling elements are configured in the form of at least one coupling projection and in the form of a corresponding coupling recess.

### Claim 14 (depends on 13)

The medical instrumentarium in accordance with claim 13, wherein at least one of:
a) the at least one coupling projection is resiliently arranged or formed on the template body, and
b) the at least one coupling projection is configured in the form of a mounting bracket which is concavely curved pointing toward the rotary axis, and
c) the at least one coupling projection is configured in the form of a coupling ring which is closed in itself or extends over at least 180° in circumferential direction in relation to the rotary axis.

### Claim 15 (depends on 13)

The medical instrumentarium in accordance with claim 13, wherein:
a) the at least one coupling recess is configured in the form of an annular groove which is open pointing away from the rotary axis, and the at least one coupling projection in the coupling position engages at least in sections into the coupling recess in circumferential direction in relation to the rotary axis, or
b) the at least one coupling recess is configured in the form of an annular groove which is open pointing away from the rotary axis, and the at least one coupling projection in the coupling position engages at least in sections into the coupling recess in circumferential direction in relation to the rotary axis, and wherein the annular groove is delimited laterally by a retaining ring, or
c) the at least one coupling recess is configured in the form of an annular groove which is open pointing away from the rotary axis, and the at least one coupling projection in the coupling position engages at least in sections into the coupling recess in circumferential direction in relation to the rotary axis, and wherein the annular groove is delimited laterally by a retaining ring, and wherein the retaining ring and the coupling body are connected to each other in at least one of a force-locking manner and positive-locking manner and by material bond.

### Claim 16 (depends on 12)

The medical instrumentarium in accordance with claim 12, wherein at least one of:
a) the first and second coupling elements are alignable relative to each other in discrete angular positions in relation to the rotary axis, and
b) the medical instrumentarium further comprises an angle adjusting device for adjusting an angular position of the coupling body and the template body in relation to the rotary axis relative to each other, or
the medical instrumentarium further comprises an angle adjusting device for adjusting an angular position of the coupling body and the template body in relation to the rotary axis relative to each other, wherein the angle adjusting device comprises a plurality of first angle adjusting members and at least one second angle adjusting member, and the at least one second angle adjusting member is in engagement with different first angle adjusting members in different angular positions,
the medical instrumentarium further comprises an angle adjusting device for adjusting an angular position of the coupling body and the template body in relation to the rotary axis relative to each other, wherein the angle adjusting device comprises a plurality of first angle adjusting members and at least one second angle adjusting member, and the at least one second angle adjusting member is in engagement with different first angle adjusting members in different angular positions, wherein the plurality of first angle adjusting members are configured in the form of angle member recesses, and the at least one second angle adjusting member is configured in the form of an angle member projection.

### Claim 17 (depends on 12)

The medical instrumentarium in accordance with claim 12, wherein the medical instrumentarium further comprises an angle adjusting device for adjusting an angular position of the coupling body and the template body in relation to the rotary axis relative to each other, wherein the angle adjusting device comprises a plurality of first angle adjusting members and at least one second angle adjusting member, and the at least one second angle adjusting member is in engagement with different first angle adjusting members in different angular positions, wherein the plurality of first angle adjusting members are configured in the form of angle member recesses, and the at least one second angle adjusting member is configured in the form of an angle member projection, and wherein at least one of
a) the angle member recesses are arranged or formed on the first or second coupling element and are arranged or formed pointing in the direction toward the rotary axis or away from the rotary axis
and
b) the at least one angle member projection is resiliently mounted and, when changing the angular position by rotating the first and second coupling elements relative to each other about the rotary axis, is moved out of one of the angle member recesses counter to a biasing force and in another angular position is moved back into one of the angle member recesses as a result of the biasing force.

### Claim 18 (depends on 12)

The medical instrumentarium in accordance with claim 12, wherein at least one of:
a) the at least one guide slot defines a guidance plane which runs transversely, in particular perpendicularly, to the rotary axis, and
b) the coupling body defines a grip region, and
c) the grip region is formed symmetrically, in particular rotationally symmetrically, in relation to the rotary axis.

### Claim 19 (depends on 12)

The medical instrumentarium in accordance with claim 12, wherein a first securing element of a securing device is associated with the first coupling element, which first securing element in the coupling position is in engagement in at least one of a force- and positive-locking manner in a securing position with a second securing element arranged on the rasp body.

### Claim 20 (depends on 12)

The medical instrumentarium in accordance with claim 12, wherein:
a) the medical instrumentarium further comprises a rasp body of a prosthesis rasp, which rasp body comprises a second coupling element of a coupling device comprising the first and the second coupling element, or
b) the medical instrumentarium further comprises a rasp body of a prosthesis rasp, which rasp body comprises a second coupling element of a coupling device comprising the first and the second coupling element, wherein the first and second coupling elements are in engagement with each other in at least one of a force- and positive-locking manner in the coupling position, and they are completely separated from each other in a cleaning position.

### Claim 21

A medical instrumentarium for implanting a hip joint endoprosthesis, which instrumentarium comprises at least one sawing template with at least one guide slot for a saw blade, wherein the sawing template comprises at least one first coupling element for temporarily coupling the sawing template to a second coupling element of a rasp body of a prosthesis rasp in a coupling position, wherein:
the medical instrumentarium further comprises a rasp body of a prosthesis rasp, which rasp body comprises a second coupling element of a coupling device comprising the first and the second coupling element, and
the first and second coupling elements are non-rotatably coupled to each other in the coupling position.

### Claim 22 (depends on 21)

The medical instrumentarium in accordance with claim 21, wherein:
the sawing template comprises a coupling body and a template body,
the at least one first coupling element is arranged or formed on the coupling body, and
the at least one guide slot is arranged or formed on the template body.

### Claim 23 (depends on 22)

The medical instrumentarium in accordance with claim 22, further comprising a coupling device for temporarily coupling the coupling body and the template body in a coupling position.

### Claim 24 (depends on 23)

The medical instrumentarium in accordance with claim 23, wherein:
the coupling device comprises first and second coupling elements,
the first and second coupling elements are arranged or formed on the coupling body on the one hand and on the template body on the other hand,
the first and second coupling elements in the coupling position are in engagement in at least one of a force- and positive-locking manner, and
the coupling body and the template body in the coupling position are mounted on each other so as to be rotatable relative to each other about a rotary axis defined by the coupling device.

### Claim 25 (depends on 21)

The medical instrumentarium in accordance with claim 21, wherein a first securing element of a securing device is associated with the first coupling element, which first securing element in the coupling position is in engagement in at least one of a force- and positive-locking manner in a securing position with a second securing element arranged on the rasp body.

### Claim 26

A medical instrumentarium for implanting a hip joint endoprosthesis, which instrumentarium comprises at least one sawing template with at least one guide slot for a saw blade, wherein:
the sawing template comprises at least one first coupling element for temporarily coupling the sawing template to a second coupling element of a rasp body of a prosthesis rasp in a coupling position,
the sawing template comprises a coupling body and a template body,
the at least one first coupling element is arranged or formed on the coupling body,
the at least one guide slot is arranged or formed on the template body,
the medical instrumentarium further comprises a coupling device for temporarily coupling the coupling body and the template body in a coupling position, and
the coupling device comprises first and second coupling elements, the first and second coupling elements are arranged or formed on the coupling body on the one hand and on the template body on the other hand, and the first and second coupling elements in the coupling position are in engagement in at least one of a force- and positive-locking manner.

### Claim 27 (depends on 26)

The medical instrumentarium in accordance with claim 26, wherein:
the coupling device comprises first and second coupling elements,
the first and second coupling elements are arranged or formed on the coupling body on the one hand and on the template body on the other hand,
the first and second coupling elements in the coupling position are in engagement in at least one of a force- and positive-locking manner, and
the coupling body and the template body in the coupling position are mounted on each other so as to be rotatable relative to each other about a rotary axis defined by the coupling device.

### Claim 28

A medical instrumentarium for implanting a hip joint endoprosthesis, which instrumentarium comprises at least one sawing template with at least one guide slot for a saw blade, wherein the sawing template comprises at least one first coupling element for temporarily coupling the sawing template to a second coupling element of a rasp body of a prosthesis rasp in a coupling position, wherein:
a first securing element of a securing device is associated with the first coupling element, which first securing element in the coupling position is in engagement in at least one of a force- and positive-locking manner in a securing position with a second securing element arranged on the rasp body,
the first and the second securing element are configured in the form of cooperating latching members.

### Claim 29 (depends on 28)

The medical instrumentarium in accordance with claim 28, wherein:
a) the medical instrumentarium further comprises a rasp body of a prosthesis rasp, which rasp body comprises a second coupling element of a coupling device comprising the first and the second coupling element, or
b) the medical instrumentarium further comprises a rasp body of a prosthesis rasp, which rasp body comprises a second coupling element of a coupling device comprising the first and the second coupling element, wherein the first and second coupling elements are in engagement with each other in at least one of a force- and positive-locking manner in the coupling position, and they are completely separated from each other in a cleaning position.

### Claim 30

A medical instrumentarium for implanting a hip joint endoprosthesis, which instrumentarium comprises at least one sawing template with at least one guide slot for a saw blade, wherein the sawing template comprises at least one first coupling element for temporarily coupling the sawing template to a second coupling element of a rasp body of a prosthesis rasp in a coupling position, wherein:
a first securing element of a securing device is associated with the first coupling element, which first securing element in the coupling position is in engagement in at least one of a force- and positive-locking manner in a securing position with a second securing element arranged on the rasp body,
one of the two securing elements is arranged or formed on the first coupling element, and
the other one of the two securing elements is arranged or formed on the second coupling element.