# US 2016/0354556 A1 · Semi disposable auto injector

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- Number: US 2016/0354556 A1
- Document ID: US20160354556A1
- Status: Published application
- Kind: A1
- Application number: 15/117,592
- Filed: 2014-02-10
- Published: 2016-12-08
- Earliest claimed: 2014-02-10
- Assignees: Elcam Medical Agricultural Cooperative Association Ltd.
- Applicants: Elcam Medical Agricultural Cooperative Association Ltd.
- Inventors: Menachem ZUCKER; Lior RADAY; David DAILY
- Web page: https://patentgrep.com/patent/US20160354556A1

## CPC

- A61M 5/24: Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or cartridges, e.g. automatic
- A61M 5/2033: {Spring-loaded one-shot injectors with or without automatic needle insertion (multishot dosing syringes A61M5/31525, needle insertion only A61M5/3287)}
- A61M 5/3202: {Devices for protection of the needle before use, e.g. caps (A61M5/50 takes precedence; protectors for sharps A61B50/3001)}
- A61M 5/3213: {Caps placed axially onto the needle, e.g. equipped with finger protection guards (axially-extensible protective sleeves A61M5/3243)}
- A61M 5/326: {Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user}
- A61M 5/46: having means for controlling depth of insertion
- A61M 5/206: {with automatic needle insertion}
- A61M 5/31511: {Piston or piston-rod constructions, e.g. connection of piston with piston-rod (A61M5/5066 takes precedence)}
- A61M 5/3204: {Needle cap removers, i.e. devices to dislodge protection cover from needle or needle hub, e.g. deshielding devices}
- A61M 2005/2026: {Semi-automatic, e.g. user activated piston is assisted by additional source of energy}
- A61M 2005/208: {Release is possible only when device is pushed against the skin, e.g. using a trigger which is blocked or inactive when the device is not pushed against the skin}
- A61M 2005/2411: {from the front}
- A61M 2005/244: {by flexible clip}
- A61M 2005/2485: {Ampoule holder connected to rest of syringe}
- A61M 2005/3125: {Display means, e.g. to indicate dose setting}
- A61M 2005/3142: {Modular constructions, e.g. supplied in separate pieces to be assembled by end-user}
- A61M 2205/583: by visual feedback
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}

## Abstract

An automatic injection device including a reusable driving assembly having a forward injection end and an engagement element and a disposable cassette assembly including an injectable liquid to be injected at an injection site, wherein the disposable cassette assembly is removably insertable into the reusable driving assembly at the forward injection end and is removably retained within the reusable driving assembly by snap fit engagement therewith, the snap fit engagement being effected at least partially by the engagement element, which is displaced rearwardly by insertion of the disposable cassette assembly in the reusable driving assembly.

## Claims

### Claim at position 1

1-24. (canceled)

### Claim 25

An automatic injection device comprising:
a reusable driving assembly having a needle insertion operative orientation; and
a disposable cassette assembly comprising a cassette housing element, a prefilled syringe including a needle and a needle guard element,
said cassette housing element and said needle guard element being arranged such that prior to both said disposable cassette assembly having been inserted into said reusable driving assembly and said reusable driving assembly being in said needle insertion operative orientation, relative axial displacement between said cassette housing element and said needle guard element is prevented.

### Claim 26 (depends on 25)

An automatic injection device according to claim 25 and wherein said arrangement of said cassette housing element and said needle guard element is such that said relative axial displacement between said cassette housing element and said needle guard element is prevented by first and second engagements, said first engagement being released upon insertion of said disposable cassette assembly into said reusable driving assembly and said second engagement being released when said reusable driving assembly is in said needle insertion operative orientation.

### Claim 27 (depends on 26)

An automatic injection device according to claim 26 and wherein said first engagement is provided by mutual engagement of at least one first protrusion of said needle guard element with at least one first slot of said cassette housing element and said second engagement is provided by mutual engagement of at least one second protrusion of said needle guard element with at least one second slot of said cassette housing element.

### Claim 28 (depends on 25)

An automatic injection device according to claim 25 and wherein:
said disposable cassette has a pre-use operative orientation, which is suitable for storage;
in said pre-use operative orientation, said needle guard element is locked to said cassette housing element by snap fit engagement of at least one protrusion of said needle guard element in at least one slot formed in said cassette housing element.

### Claim at position 6

29-30. (canceled)

### Claim 31 (depends on 25)

An automatic injection device according to claim 25 and wherein:
said reusable driving assembly includes a forward injection end and multiple mutually axially displaceable elements;
said needle is suitable for injecting an injectable liquid at an injection site;
said disposable cassette assembly is removably insertable into said reusable driving assembly at said forward injection end; and
following insertion of said disposable cassette assembly into said reusable driving assembly, said automatic injection device may be caused to assume an injection site engagement operative orientation by pressing said forward injection end of said reusable driving assembly against said injection site, thereby producing mutual axial displacement of at least some of said multiple mutually axially displaceable elements but not producing relative axial displacement between said needle guard element and said cassette housing element of said disposable cassette assembly.

### Claim 32 (depends on 25)

An automatic injection device according to claim 25 and wherein:
following insertion of said disposable cassette assembly into said reusable driving assembly, said automatic injection device may be caused to assume an injection site engagement operative orientation; and
following assumption of said pre-needle insertion operative orientation, said automatic injection device may be caused to assume a needle insertion operative orientation by pressing said trigger button element, thereby causing forward axial displacement of said cassette housing element and resulting penetration of said injection site by said needle to a penetration depth defined by engagement of said cassette housing element with said forward base element of said reusable driving assembly.

### Claim 33 (depends on 25)

An automatic injection device according to claim 25 and wherein:
following injection, said disposable cassette assembly extends partially outside of said reusable driving assembly at said forward injection end and is releasably retained in said reusable driving assembly; and
said disposable cassette assembly may thereafter be fully disengaged from said reusable driving assembly by axially pulling said disposable cassette assembly out of said reusable driving assembly.

### Claim 34 (depends on 25)

An automatic injection device according to claim 25 and wherein only following insertion and retention of said disposable cassette assembly in said reusable driving assembly, said automatic injection device may be caused to assume a needle insertion operative orientation by pressing said trigger button element, thereby causing forward axial displacement of said cassette housing element and resulting penetration of said injection site by said needle.

### Claim at position 11

35-50. (canceled)

### Claim 51

An automatic injection device comprising:
a reusable driving assembly having a forward injection end and multiple mutually axially displaceable elements; and
a disposable cassette assembly including a cassette housing element, a prefilled syringe including a needle for injecting an injectable liquid at an injection site and a needle guard element,
wherein:
said disposable cassette assembly is removably insertable into said reusable driving assembly at said forward injection end;
following insertion of said disposable cassette assembly into said reusable driving assembly, said automatic injection device may be caused to assume an injection site engagement operative orientation by pressing said forward injection end of said reusable driving assembly against said injection site, thereby producing mutual axial displacement of at least some of said multiple mutually axially displaceable elements but not producing relative axial displacement between said needle guard element and said cassette housing element of said disposable cassette assembly.

### Claim 52 (depends on 51)

An automatic injection device according to claim 51 and wherein:
said reusable driving assembly includes a forward base element and a trigger button element;
following assumption of said injection site engagement operative orientation, said automatic injection device may be caused to assume a needle insertion operative orientation by pressing said trigger button element, thereby causing forward axial displacement of said cassette housing element and resulting penetration of said injection site by said needle to a penetration depth defined by engagement of said cassette housing element with said forward base element of said reusable driving assembly.

### Claim 53 (depends on 52)

An automatic injection device according to claim 52 and wherein:
following injection, said disposable cassette assembly extends partially outside of said reusable driving assembly at said forward injection end and is releasably retained in said reusable driving assembly; and
said disposable cassette assembly may thereafter be fully disengaged from said reusable driving assembly by axially pulling said disposable cassette assembly out of said reusable driving assembly.

### Claim 54 (depends on 52)

An automatic injection device according to claim 52 and wherein only following insertion and retention of said disposable cassette assembly in said reusable driving assembly, said automatic injection device may be caused to assume said needle insertion operative orientation by pressing said trigger button element, thereby causing forward axial displacement of said cassette housing element and resulting penetration of said injection site by said needle.

### Claim 55 (depends on 51)

An automatic injection device according to claim 51 and wherein said reusable driving assembly includes a plunger element, a forward cover element and a rearward cover element, a spring and at least one cocked orientation retaining element operative in a cocked operative orientation of said reusable driving assembly for cocking said plunger element against the urging of said spring and retaining said plunger element in said cocked operative orientation.

### Claim at position 17

56-67. (canceled)

### Claim 68

An automatic injection device comprising:
a reusable driving assembly having a forward injection end; and
a disposable cassette assembly;
wherein:
said disposable cassette assembly is removably insertable into said reusable driving assembly at said forward injection end;
following injection, said disposable cassette assembly extends partially outside of said reusable driving assembly at said forward injection end and is releasably retained in said reusable driving assembly; and
said disposable cassette assembly may thereafter be fully disengaged from said reusable driving assembly by axially pulling said disposable cassette assembly out of said reusable driving assembly.

### Claim 69 (depends on 68)

An automatic injection device according to claim 68 and wherein:
said reusable driving assembly includes a trigger button element;
said disposable cassette assembly includes a cassette housing element, a needle and an injectable liquid to be injected at an injection site;
only following insertion and retention of said disposable cassette assembly in said reusable driving assembly, said automatic injection device may be caused to assume a needle insertion operative orientation by pressing said trigger button element, thereby causing forward axial displacement of said cassette housing element and resulting penetration of said injection site by said needle.

### Claim 70 (depends on 69)

An automatic injection device according to claim 69 wherein said reusable driving assembly includes a plunger element, a forward cover element and a rearward cover element, a spring and at least one cocked orientation retaining element operative in a cocked operative orientation of said reusable driving assembly for cocking said plunger element against the urging of said spring and retaining said plunger element in said cocked operative orientation.

### Claim 71 (depends on 70)

An automatic injection device according to claim 70 and wherein said forward cover element and said rearward cover element move towards each other in assuming said cocked operative orientation and when in said cocked operative orientation are locked against mutual axial displacement.

### Claim 72 (depends on 70)

An automatic injection device according to claim 70 and wherein:
said disposable cassette assembly includes a prefilled syringe including said needle for injecting said injectable liquid at said injection site and a needle guard element, and
following injection and removal of said needle from the injection site, assumption of said cocked operative orientation is possible thereafter only following forward displacement of said needle guard element relative to said needle.

### Claim 73 (depends on 68)

An automatic injection device according to claim 68 and wherein:
said reusable driving assembly includes a forward injection end and a safety catch element; and
said automatic injection device may be caused to assume said needle insertion operative orientation by pressing said trigger button element, thereby causing forward axial displacement of said cassette housing element and resulting penetration of said injection site by said needle, only when all of the following conditions are met:
said reusable driving assembly is in a cocked operative orientation;
said disposable cassette assembly is inserted and retained in said reusable driving assembly, and
said safety catch element is in a disengaged operative orientation.

### Claim 74 (depends on 73)

An automatic injection device according to claim 73 and wherein said automatic injection device may be caused to assume said needle insertion operative orientation by pressing said trigger button element, thereby causing forward axial displacement of said cassette housing element and resulting penetration of said injection site by said needle, only when all of the following conditions are met:
said reusable driving assembly is in said cocked operative orientation; and thereafter
said disposable cassette assembly is fully inserted and retained in said reusable driving assembly, and thereafter
said safety catch element is in said disengaged operative orientation.

### Claim at position 25

75-90. (canceled)