CN216090714U

CN216090714U - Puncture assembly

Info

Publication number: CN216090714U
Application number: CN202122440902.5U
Authority: CN
Inventors: 董成旭; 伏素素; 顾海军; 贾登强; 曹刚毅
Original assignee: Huanxin Medical Technology Suzhou Co ltd
Current assignee: Huanxin Medical Technology Suzhou Co ltd
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2022-03-22
Anticipated expiration: 2031-10-11

Abstract

The utility model discloses a puncture assembly, which comprises a control handle and a puncture needle; the control handle comprises a main body part and a pushing part, wherein the pushing part is arranged on the main body part and can move on the main body part along a first direction; the puncture needle comprises an extension part extending along a first direction and a needle tip part for puncturing biological tissues, and the extension part is fixedly connected to the pushing part; when the pushing part moves on the body part, the puncture needle can be driven to move along the first direction so as to control the puncture needle to be pierced and withdrawn. According to the puncture assembly provided by the utility model, through the arrangement of the control handle, the pushing part on the movable control handle can control the puncture needle to be punctured and retracted, so that a user can conveniently control the puncture needle, the puncture action of the puncture needle is controlled by the pushing part, and the user can conveniently control the puncture force.

Description

Puncture assembly

Technical Field

The present invention relates to the field of medical devices, and more particularly to a puncturing assembly for puncturing biological tissue.

Background

With the development of interventional techniques, the need for a puncture assembly in interventional type medical procedures is increasingly urgent. The interventional diagnosis and treatment technology is an operation technology for diagnosis and treatment through a blood vessel by using instruments such as a puncture needle, a dilator, a sheath tube and the like under the guidance of medical imaging equipment. However, the conventional puncture assembly has complex implementation process and inconvenient operation and control of the cooperation among the components.

Therefore, in view of the above technical problems, there is a need for a new puncture assembly.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a puncture assembly which can control a puncture needle in a puncture process through a control handle and is simple and convenient to use.

In order to achieve the purpose, the technical scheme provided by the utility model is as follows:

a puncture assembly for puncturing biological tissue, the puncture assembly comprising: a control handle and a puncture needle; the control handle comprises a body part and a pushing part, wherein the pushing part is arranged on the body part and can move on the body part along a first direction; the puncture needle comprises an extension part extending along a first direction and a needle tip part for puncturing biological tissues, and the extension part is fixedly connected to the pushing part; when the pushing part moves on the body part, the puncture needle can be driven to move along a first direction so as to control the puncture needle to be punctured out and retracted.

In one or more embodiments, a scale arranged along a first direction is further fixedly connected to the pushing portion, a pointer for indicating a scale on the scale is arranged on the body portion, and the scale and the pointer cooperate to measure a moving distance of the pushing portion relative to the body portion.

In one or more embodiments, the main body has an accommodating cavity extending along a first direction, the pushing portion includes a slider and a pushing block integrally formed on the slider, the slider is disposed in the accommodating cavity and can slide along the first direction, the pushing block is located outside the accommodating cavity, and the slider can be driven to slide by pushing the pushing block.

In one or more embodiments, a first fixed seat is fixedly installed at a distal end of the body portion, a compression spring is disposed between the first fixed seat and the slider, one end of the compression spring is connected to the first fixed seat, and the other end of the compression spring is connected to the slider.

In one or more embodiments, the extension portion of the puncture needle sequentially passes through the first fixed seat, the compression spring and the slider in a first direction, the extension portion is fixedly connected with the slider, and the extension portion can move in the first direction relative to the first fixed seat and the compression spring.

In one or more embodiments, a luer fitting is slidably mounted on the proximal end of the body portion, and the proximal end of the needle extension communicates with and is secured to the luer fitting.

In one or more embodiments, the luer fitting has a removable locking element attached thereto that locks the luer fitting to the body portion when the locking element is attached to the luer fitting.

In one or more embodiments, the puncture assembly further includes a dilator, and a proximal end of the dilator is fixed to the first fixing seat and is sleeved on the outer periphery of the puncture needle.

In one or more embodiments, a guide wire is threaded through the puncture needle, the length of the guide wire is greater than the length of the puncture needle, and the distal end of the guide wire is configured to be bent in a hook shape.

In one or more embodiments, a second fixed seat is further fixedly mounted at the distal end of the body portion, a sheath tube is fixedly mounted on the second fixed seat, and the sheath tube is sleeved on the outer periphery of the puncture needle.

Compared with the prior art, in conclusion, the puncture assembly provided by the utility model has the advantages that through the arrangement of the control handle, the pushing part on the control handle is moved to control the puncture needle to be punctured out and retracted, so that a user can conveniently control the puncture needle, the puncture action of the puncture needle is controlled by the pushing part, and the user can conveniently control the puncture force; and this puncture assembly integrates sheath pipe, expander, pjncture needle and seal wire into a system, and is simpler, safe in the puncture operation in-process, avoids the repeated penetration withdrawal of seal wire, sheath pipe and pjncture needle.

Drawings

FIG. 1 is a perspective view of a spike assembly in accordance with one embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of the spike assembly of FIG. 1;

FIG. 3 is a cross-sectional view taken at A in FIG. 1;

FIG. 4 is an enlarged schematic view at B in FIG. 2;

FIG. 5 is a perspective view of the body portion of the spike assembly of FIG. 1;

FIG. 6 is a perspective view of the pusher portion of the spike assembly of FIG. 1;

FIG. 7 is a schematic perspective view of a luer fitting of the spike assembly of FIG. 1;

FIG. 8 is a perspective view of a locking element of the spike assembly of FIG. 1;

FIG. 9 is a schematic illustration of the configuration of a needle in accordance with an embodiment of the present invention;

FIG. 10 is a schematic illustration of the construction of a needle in accordance with another embodiment of the utility model;

FIG. 11 is a schematic illustration of the construction of a needle in accordance with another embodiment of the utility model;

figure 12 is a schematic view of a lancet in accordance with another embodiment of the present invention.

Description of the main reference numerals:

1-control handle, 11-body part, 12-pushing part, 13-scale, 14-pointer, 15-compression spring, 111-containing cavity, 112-first through hole, 113-second through hole, 121-slider, 122-push block, 2-puncture needle, 21-extension part, 22-needle tip part, 23-softening structure, 3-dilator, 4-sheath tube, 51-first fixing seat, 52-second fixing seat, 6-luer joint, 61-head part, 62-middle part, 63-tail part, 7-locking part, 71-locking part, 72-lug and 8-guide wire.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

To more clearly describe the structure of the spike assembly of the present invention, the terms "proximal" and "distal" are defined herein as relative positions and are conventional terms used in the interventional medical field. Specifically, "distal" refers to the end of the surgical procedure that is distal from the operator, and "proximal" refers to the end of the surgical procedure that is proximal to the operator.

Referring to fig. 1 to 4, a puncturing assembly according to an embodiment of the present invention is used for puncturing biological tissue, such as human blood vessels including atrial septum and diaphragm, and for puncturing body cavities and tissue diaphragms. This puncture assembly includes: a control handle 1 and a puncture needle 2.

Referring to fig. 5 and 6, the control handle 1 includes a main body 11 and a pushing portion 12, the pushing portion 12 is mounted on the main body 11, and the pushing portion 12 is movable on the main body 11 in a first direction (parallel to the axial direction of the puncture needle 2). The puncture needle 2 comprises an extension part 21 extending along a first direction and a needle tip part 22 for puncturing biological tissues, wherein the extension part 21 is fixedly connected to the pushing part 12.

Wherein, when moving on the body 11, the pushing part 12 can drive the puncture needle 2 to move along the first direction to control the puncture needle 2 to puncture and withdraw.

In this embodiment, when the puncture assembly is used for puncturing, the main body 11 of the control handle 1 can be held by a user, and then the pushing part 12 on the control handle 1 can be moved to control the puncturing and withdrawing of the puncture needle 2, so that the control handle 1 can be conveniently arranged for the user to control the puncture needle 2.

In an exemplary embodiment, a scale 13 disposed along the first direction is further fixedly connected to the pushing portion 12, a pointer 14 for indicating a scale on the scale 13 is disposed on the body portion 11, and the scale 13 and the pointer 14 cooperate to measure a moving distance of the pushing portion 12 relative to the body portion 11. When a user moves the pushing part 12, the scale 13 can move synchronously, the pointer 14 is fixed on the body part 11 and used for indicating the scale on the scale 13, and the moving distance of the pushing part 12 relative to the body part 11 can be calculated by observing the scales indicated by the pointer 14 before and after the scale 13 moves, so that the moving distance of the puncture needle 2 can be obtained, and the user can conveniently control the puncture stroke of the puncture needle 2. In this embodiment, the moving distance of the pushing unit 12 is about 10 mm.

In an exemplary embodiment, the body portion 11 has a receiving cavity 111 extending along a first direction. The pushing unit 12 includes a slider 121 and a pushing block 122 integrally formed on the slider 121, and the slider 121 is disposed in the accommodating chamber 111 and is slidable in the accommodating chamber 111 in the first direction. The pushing block 122 is located outside the accommodating cavity 111, and the sliding block 121 can be driven to slide by pushing the pushing block 122. The two side walls of the accommodating cavity 111 are provided with sliding grooves extending along the first direction, and the two end portions of the slider 121 are supported in the sliding grooves and can slide along the sliding grooves. The pushing block 122 is integrally formed at both ends of the sliding block 121 and located outside the sliding slot, the pushing block 122 is convenient for a user to operate, and an arc surface portion for matching with the fingers of the user is formed on the pushing block 122 and is convenient for the fingers of the user to grasp.

In an exemplary embodiment, a first fixed seat 51 is fixedly installed at the distal end of the body 11, a compression spring 15 is disposed between the first fixed seat 51 and the slider 121, one end of the compression spring 15 is connected to the first fixed seat 51, and the other end of the compression spring 15 is connected to the slider 121. When the user pushed the slider 121 towards the distal end along first direction, the compression spring 15 between slider 121 and the first fixing base 51 was compressed, can form reverse effort, and the distance along with the propelling movement is big more the direction effort that compression spring 15 produced is big more moreover to can play certain hindrance effect to the slider 121 of propelling movement towards the distal end, exert oneself too hard and lead to puncture of pjncture needle 2 to be apart from too big when avoiding pushing slider 121.

In an exemplary embodiment, a first through hole 112 extending along a first direction is formed at a distal end of the body portion 11, the first through hole 112 is communicated with the receiving cavity 111, and the first fixing seat 51 is fixedly embedded in the first through hole 112. The extension part 21 of the puncture needle 2 passes through the first fixed seat 51, the compression spring 15 and the slider 121 in this order in the first direction, the extension part 21 is fixedly connected to the slider 121, and the extension part 21 is movable in the first direction relative to the first fixed seat 51 and the compression spring 15.

In an exemplary embodiment, referring to fig. 1 and 7, a luer connector 6 is slidably mounted on the proximal end of the body 11, and the proximal end of the extension 21 of the puncture needle 2 is connected to the luer connector 6 and fixed to the luer connector 6, so that the needle 2 can move in the first direction to drive the luer connector 6 to move synchronously. Fluid can be delivered into the puncture needle 2 via the luer fitting 6.

In an exemplary embodiment, the proximal end of the body portion 11 is formed with a second through hole 113 extending along the first direction, the second through hole 113 is communicated with the receiving cavity 111, and the luer 6 is slidably mounted in the second through hole 113. The male luer 6 includes a head portion 61, a middle portion 62, and a tail portion 63 which are integrally formed. Wherein. The intermediate portion 62 is substantially cylindrical and has a diameter slightly smaller than that of the second through hole 113 so as to slide in the second through hole 113. The head 61 is formed by extending a distal end of the intermediate portion 62, the head 61 is generally tapered, and the diameter of the head 61 is gradually reduced from the distal end of the intermediate portion 62 to facilitate the insertion of the luer 6 into the second through hole 113. The tail 63 is formed at the proximal end of the middle portion 62 in a flange shape having a diameter larger than that of the second through hole 113.

In an exemplary embodiment, referring to fig. 1 and 8, the luer fitting 6 is provided with a detachable locking member 7, and the locking member 7 can lock the luer fitting 6 to the body 11 when being mounted on the luer fitting 6. The locking member 7 comprises a semi-annular locking portion 71 and a lug 72 formed on the locking portion 71 in a protruding manner, the locking portion 71 is configured to be capable of being clamped on the outer peripheral surface of the middle portion 62 of the luer connector 6, and two end surfaces of the locking portion 71 in the first direction can respectively abut against the outer edge of the second through hole 113 and the tail portion 63 of the luer connector 6 so as to limit the displacement of the luer connector 6 relative to the body portion 11 in the first direction, so as to avoid misoperation of ejecting the puncture needle 2 in the using process. The provision of the tab 72 may facilitate the removal of the locking member 7 from the luer fitting 6.

In an exemplary embodiment, referring to fig. 1 to 4, the puncture assembly further includes a dilator 3, and a proximal end of the dilator 3 is fixed on the first fixing seat 51 and is sleeved on the outer periphery of the puncture needle 2. The puncture needle 2 is configured to be movable in a first direction within the dilator 3. The dilator 3 has an inner cavity extending in its axial direction (first direction) and having a diameter slightly larger than the outer diameter of the puncture needle 2 so that the puncture needle 2 can move inside the dilator 3. The dilator 3 has openings at its distal and proximal ends communicating with its lumen, and the openings are configured to be large enough so that the puncture needle 2 can pass through them in the axial direction. The dilator 3 may be made of medical materials such as HDPE, PA, and PA elastomer.

In an exemplary embodiment, the puncture needle 2 is hollow, a guide wire 8 is inserted into the puncture needle 2, the length of the guide wire 8 is greater than that of the puncture needle 2, and the distal end of the guide wire 8 is configured in a hook shape (generally "J" shape). The diameter of the guide wire 8 is slightly smaller than the inner diameter of the puncture needle 2 so that the guide wire 8 can be inserted into the puncture needle 2 or withdrawn from the puncture needle 2. The guide wire 8 can serve as a guide to assist the puncture needle 2 in reaching a predetermined puncture position when the puncture needle 2 performs puncture.

In other embodiments, the guide wire 8 may be replaced by an ultrasonic catheter for ultrasonic imaging to accurately locate the puncture site during the puncture location procedure.

In an exemplary embodiment, the distal end of the body 11 is further fixedly mounted with a second fixing seat 52, the second fixing seat 52 is fixedly mounted with a sheath tube 4, and the sheath tube 4 is sleeved on the outer peripheries of the dilator 3 and the puncture needle 2. The sheath 4 has a lumen extending in its axial direction so that the puncture needle 2 can be inserted into the sheath 4 from the proximal end of the sheath 4 and the puncture needle 2 can be passed out from the distal end of the sheath 4 when the puncture needle 2 has a sufficiently long length, and the sheath 4 is generally flexible, i.e., the sheath 4 can be bent by an external force. The body of the sheath tube 4 is provided with a developing design, and development can be assisted in the operation process by adding developing aids such as barium sulfate, bismuth sulfate and the like.

In an exemplary embodiment, the proximal end of the extension 21 of the puncture needle 2 is formed with a softening structure 23, and the softening structure 23 is provided to soften the proximal end of the extension 21 so as to bend the proximal end of the extension 21, so that the direction of the needle tip 22 can be adjusted by bending the proximal end of the extension 21 to smoothly reach the puncture site. The softening structure 23 may have a screw structure, a hollowed-out structure, a snake bone structure, etc. formed on the outer surface of the proximal end of the extension 21 as shown in fig. 9 to 12.

The utility model is further described below with reference to specific usage scenarios:

when the puncture assembly provided by the utility model is used for puncturing the interatrial septum, the guide wire 8 is firstly pushed into the superior vena cava; the sheath tube 4, the dilator 3 and the puncture needle 2 which are sleeved on the guide wire 8 are pushed into the superior vena cava along the guide wire 8; withdrawing the guide wire 8 into the puncture needle 2; pull down into the heart from the superior vena cava to find the fossa ovalis; stretching by means of a spreader 3; advancing the guidewire 8 to the puncture location; the pushing part 12 is pushed to drive the puncture needle 2 to puncture and push the guide wire 8; the sheath tube 4 and the dilator 3 which are sleeved on the guide wire 8 by the cover are made to pass through; then, the pusher 12 is released to withdraw the puncture needle 2, thereby completing the puncture.

In summary, according to the puncture assembly provided by the utility model, through the arrangement of the control handle 1, the pushing part 12 on the control handle 1 is moved to control the puncture needle 2 to be punctured out and retracted, so that a user can conveniently control the puncture needle 2, and the puncture action of the puncture needle 2 is controlled by the pushing part 12, so that the user can conveniently control the puncture force; and this puncture assembly integrates sheath pipe 4, expander 3, pjncture needle 2 and seal wire 8 into a system, and is simpler, safety in the puncture operation process, avoids the repeated penetration withdrawal of seal wire 8, sheath pipe 4 and pjncture needle 2.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the utility model and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the utility model and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.

Claims

1. A puncture assembly for puncturing biological tissue, the puncture assembly comprising:

a control handle including a body portion and a pushing portion, the pushing portion being mounted on the body portion and being movable in a first direction on the body portion;

the puncture needle comprises an extension part extending along a first direction and a needle tip part for puncturing biological tissues, and the extension part is fixedly connected to the pushing part;

when the pushing part moves on the body part, the puncture needle can be driven to move along a first direction so as to control the puncture needle to be punctured out and retracted.

2. The spike assembly of claim 1 wherein a scale is fixedly attached to the pusher in the first orientation, and wherein a pointer is provided on the body for indicating the scale on the scale, the scale and the pointer cooperating to measure the distance the pusher moves relative to the body.

3. The puncture assembly of claim 1, wherein the body portion has a receiving cavity extending along a first direction, the pushing portion includes a slider and a pushing block integrally formed on the slider, the slider is disposed in the receiving cavity and can slide along the first direction, the pushing block is disposed outside the receiving cavity, and the slider can be driven to slide by pushing the pushing block.

4. The spike assembly of claim 3 wherein the distal end of the body portion is fixedly mounted with a first anchor, a compression spring is disposed between the first anchor and the slider, one end of the compression spring is attached to the first anchor, and the other end of the compression spring is attached to the slider.

5. The spike assembly of claim 4, wherein an extension portion of the spike passes through the first anchor, the compression spring, and the slider in sequence in a first direction, the extension portion is fixedly attached to the slider, and the extension portion is movable in the first direction relative to the first anchor and the compression spring.

6. The spike assembly of claim 4 wherein the proximal end of the body portion is slidably mounted with a luer fitting and the proximal end of the extension portion of the spike is in communication with and secured to the luer fitting.

7. The spike assembly of claim 6 wherein a removable locking member is mounted on the luer connector and is adapted to lock the luer connector to the body portion when mounted on the luer connector.

8. The puncture assembly of claim 4, further comprising a dilator, wherein a proximal end of the dilator is fixed to the first holder and is disposed around a periphery of the puncture needle.

9. The puncture assembly of any one of claims 1 to 8, wherein a guide wire is inserted into the puncture needle, the guide wire has a length greater than that of the puncture needle, and a distal end of the guide wire is configured in a hook shape.

10. The puncture assembly according to any one of claims 1 to 8, wherein a second fixing seat is fixedly mounted at the distal end of the body portion, a sheath is fixedly mounted on the second fixing seat, and the sheath is sleeved on the outer periphery of the puncture needle.