# US 2024/0197362 A1 · Puncture Device And Sheath Tube

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- Number: US 2024/0197362 A1
- Document ID: US20240197362A1
- Status: Published application
- Kind: A1
- Application number: 18/287,916
- Filed: 2022-04-19
- Published: 2024-06-20
- Earliest claimed: 2021-04-22
- Assignees: Surgaid Medical (Xiamen) Co., Ltd.
- Applicants: Surgaid Medical (Xiamen) Co., Ltd.
- Inventors: Yifan Mo; Linfeng Hu; Boze Huang; Dekun Xu; Congjie Lin; Yanlan Luo
- Web page: https://patentgrep.com/patent/US20240197362A1

## CPC

- A61B 17/34: Trocars; Puncturing needles
- A61B 17/3421: {Cannulas}
- A61B 17/3496: {Protecting sleeves or inner probes; Retractable tips (for protecting body piercing guide needles A61M25/0612)}
- A61B 90/361: {Image-producing devices, e.g. surgical cameras}
- A61B 2017/00398: {using powered actuators, e.g. stepper motors, solenoids}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A puncture device (1), comprising: a puncture base (10), a protective sleeve (60), a disassembling/assembling assembly (50) and a puncture assembly (40). One end of the protective sleeve (60) is provided with a mounting hole (610); the protective sleeve (60) is sleeved on the puncture base (10); the disassembling/assembling assembly (50) is connected to the end of the protective sleeve (60) having the mounting hole (610); and a tip (43) of the puncture assembly (40) sequentially passes through the disassembling/assembling assembly (50) and the mounting hole (610) to be in driving connection with the puncture base (10). Also provided is a sheath tube, comprising: a sheath tube body (11) and a first thread structure (12) and a first horizontal stripe structure (13) provided on an outer wall of the sheath tube body (11). The first thread structure (12) is provided at a first end of the sheath tube body (11); the first horizontal stripe structure (13) is provided between the first thread structure (12) and a second end (14) of the sheath tube body (11) in an axial direction of the sheath tube body (11); and horizontal stripes of the first horizontal stripe structure (13) are patterns perpendicular to the axial direction of the sheath tube body (11). After the puncture device (1) is used, it is unnecessary to spend additional time disinfecting the puncture base (10) and then disassemble/assemble the puncture assembly (40), so that the corrosion effect possibly generated by a disinfection agent on the puncture base (10) is avoided, the service life of the puncture base (10) is prolonged, and damage to a sterile environment for the puncture assembly (40) is avoided while quick disassembling/assembling of the puncture base (10) and the puncture assembly (40) is achieved. By using the first thread structure (12) and the first horizontal stripe structure (13), a friction force with an incision tissue is increased, thereby improving the stability of fixing the sheath tube in an incision.

## Claims

### Claim 1

A puncture device, comprising: a puncture base, a protective sleeve, a disassembling/assembling assembly and a puncture assembly, wherein a mounting hole is formed in one end of the protective sleeve;
the protective sleeve is sleeved on the puncture base;
the disassembling/assembling assembly is connected to one end of the protective sleeve having the mounting hole; and
a tip of the puncture assembly sequentially passes through the disassembling/assembling assembly and the mounting hole to be in driving connection with the puncture base.

### Claim 2 (depends on 1)

The puncture device according to claim 1, wherein the disassembling/assembling assembly comprises an elastic buckle connected to the protective sleeve;
the elastic buckle is provided with a deformation hole;
a tip of the puncture assembly sequentially passes through the deformation hole and the mounting hole, to be in driving connection with the puncture base;
when the elastic buckle is in a state of not being subjected to an external force, a projection of the tip on a plane where the deformation hole is located partially overlaps with the deformation hole; and
when the elastic buckle is in a state of being subjected to the external force, the projection of the tip on the plane where the deformation hole is located falls within the deformation hole.

### Claim 3 (depends on 2)

The puncture device according to claim 2, wherein the elastic buckle comprises: a first deformation structure, a second deformation structure, and connecting structures connecting the first deformation structure and the second deformation structure;
the first deformation structure is provided with a first through hole which forms the deformation hole;
the second deformation structure is provided with a second through hole; and
a projection of the first deformation structure on a plane where the second deformation structure is located is in the second through hole.

### Claim 4 (depends on 3)

The puncture device according to claim 3, wherein the connecting structures comprise a first connecting structure and a second connecting structure opposite to each other; and
when the elastic buckle is in the state of not being subjected to the external force, the deformation hole is elliptical, projections of the first connecting structure and the second connecting structure on the plane where the deformation hole is located respectively form angles α with a straight line where a short axis of the deformation hole is located, wherein 0≤α<45°.

### Claim 5 (depends on 4)

The puncture device according to claim 4, wherein the elastic buckle further comprises: a fixed cover, a first handle and a supporting portion, wherein the first handle and the supporting portion are disposed opposite to each other;
the first handle and the supporting portion are separately connected to the second deformation structure;
the fixed cover is provided with a third through hole corresponding to the deformation hole, and forms an accommodating region with one side of the puncture base close to the elastic buckle, and the elastic buckle is disposed in the accommodating region; and
a first opening is formed in a peripheral of the fixed cover, the first handle passes through the first opening to extend out of the accommodating region, and one end of the supporting portion away from the second deformation structure is abutted against an inner side wall of the fixed cover.

### Claim 6 (depends on 4)

The puncture device according to claim 4, wherein the elastic buckle further comprises the first handle and a second handle disposed opposite to each other;
the first handle and the second handle are separately connected to the second deformation structure;
when the elastic buckle is in the state of not being subjected to the external force, projections of the first handle and the second handle on the plane where the deformation hole is located respectively form angles β with a straight line where a long axis of the deformation hole is located, wherein 0≤β<45°; or
when the elastic buckle is in the state of not being subjected to the external force, the projections of the first handle and the second handle on the plane where the deformation hole is located respectively form angles β with the straight line where the short axis of the deformation hole is located, wherein 0≤β<45°.

### Claim 7 (depends on 6)

The puncture device according to claim 6, wherein the disassembling/assembling assembly further comprises a fixed cover;
the fixed cover forms an accommodating region with the side of the puncture base close to the elastic buckle, and the elastic buckle is disposed in the accommodating region; and
the fixed cover is provided with a third through hole corresponding to the deformation hole.

### Claim 8 (depends on 5)

The puncture device according to claim 5, wherein the disassembling/assembling assembly further comprises a limiting member;
the limiting member is fixedly connected to one side of the fixed cover close to the elastic buckle, the limiting member is disposed in the second through hole, and used for limiting at least one of the first deformation structure, the second deformation structure, the first connecting structure and the second connecting structure, when the elastic buckle is deformed; and/or
the limiting member is fixedly connected to one side of the protective sleeve close to the elastic buckle, the limiting member is disposed in the second through hole and used for limiting at least one of the first deformation structure, the second deformation structure, the first connecting structure and the second connecting structure, when the elastic buckle is deformed.

### Claim 9 (depends on 1)

The puncture device according to claim 1, wherein the puncture base comprises a housing and a driving mechanism;
the driving mechanism is disposed in the housing; and the tip of the puncture assembly is in driving connection with the driving mechanism.

### Claim 10 (depends on 9)

The puncture device according to claim 9, wherein the driving mechanism comprises a driving motor and a driving gear;
the driving gear is fixedly connected to an output end of the driving motor; and
a gear-tooth structure is disposed in a circumferential direction of the tip of the puncture assembly; and the driving gear is engaged with the gear-tooth structure.

### Claim 11 (depends on 10)

The puncture device according to claim 10, wherein the puncture assembly comprises a connecting cover, a puncture needle and a puncture sheath;
the puncture sheath is sleeved outside the puncture needle;
a needle head end of the puncture needle extends out of a sheath head end of the puncture sheath, a needle tail end of the puncture needle and the tip are coaxial and fixedly connected to both sides of the connecting cover respectively; and
the connecting cover is in driving connection with a sheath tail end of the puncture sheath.

### Claim 12 (depends on 11)

The puncture device according to claim 11, wherein the connecting cover comprises a connecting plate, an extension sleeve and a clamping key;
both sides of the connecting plate are fixedly connected to the needle tail end of the puncture needle and the tip respectively;
the extension sleeve and the clamping key are fixedly connected to one side of the connecting plate facing the puncture sheath, separately;
the extension sleeve is sleeved outside the sheath tail end of the puncture sheath; and
a clamping groove matching with the clamping key is formed in one side, facing the connecting plate, of the sheath tail end of the puncture sheath.

### Claim 13

(canceled)

### Claim 14 (depends on 1)

The puncture device according to claim 1, further comprising a display module and a camera;
the display module is disposed at one end of the puncture base away from the puncture assembly;
the camera is disposed at one end in the puncture assembly away from the puncture base; and
the camera is in communication connection with the display module.

### Claim 15 (depends on 14)

The puncture device according to claim 14, wherein the display module comprises a control circuit board, a fixed bracket, a display screen and a protective cover plate;
the protective cover plate is connected to the fixed bracket, and limits the display screen to one side of the fixed bracket away from the puncture assembly;
one side of the fixed bracket close to the puncture assembly is connected to the control circuit board; and
one side of the protective cover plate away from the fixed bracket is connected to an inner side wall of the housing of the puncture base.

### Claim 16 (depends on 15)

The puncture device according to claim 15, wherein the fixed bracket comprises a bracket body and a first clamping key structure; the control circuit board is provided with a first clamping position; and
the first clamping key structure has one end connected to the bracket body and one other end in clamping connection with the first clamping position in a mutual matching manner.

### Claim 17 (depends on 16)

The puncture device according to claim 16, wherein the bracket body comprises a first baffle plate structure and a bottom plate;
the first baffle plate structure is arranged in a circumferential direction of the bottom plate, and abutted against the protective cover plate; and
a placing region is formed by the first baffle plate structure and the bottom plate in an enclosing manner; and the display screen is embedded into the placing region.

### Claim 18 (depends on 17)

The puncture device according to claim 17, wherein the protective cover plate comprises a cover plate body and a second clamping key structure; the bracket body is further provided with a second clamping position; and
the second clamping key structure has one end connected to the protective cover plate and one other end in clamping connection with the second clamping position in the mutual matching manner.

### Claim 19 (depends on 18)

The puncture device according to claim 18, wherein the cover plate body comprises a transparent member and a frame; a display window is formed in one side of the housing away from the puncture assembly; and
the transparent member has a part embedded into the frame and a part protruding from the frame and embedded into the display window.

### Claim 20 (depends on 19)

The puncture device according to claim 19, wherein the puncture base further comprises a limiting stopper;
the limiting stopper is disposed on one side of the control circuit board away from the fixed bracket; and
the limiting stopper has one end connected to the housing and one other end connected to the first clamping key structure.

### Claim 21

A sheath tube, comprising a sheath tube body, a first thread structure and a first horizontal stripe structure, wherein the first thread structure and the first horizontal stripe structure are disposed on an outer wall of the sheath tube body;
the first thread structure is disposed at a first end of the sheath tube body; and
the first horizontal stripe structure is disposed between the first thread structure and a second end of the sheath tube body in an axial direction of the sheath tube body; and horizontal stripes of the first horizontal stripe structure are patterns perpendicular to the axial direction of the sheath tube body.