Suturing device

Abstract

The invention relates to a suturing device. The suturing device comprises an outer sleeve and a suturing mechanism. A window allowing target tissue to enter is formed in the side wall of the far end of the outer sleeve, the window is communicated with an inner cavity of the outer sleeve, and the inner cavity is further used for being communicated with a negative pressure source. The suture mechanism is arranged in the outer sleeve and used for suturing the target tissue sucked into the window. When the suturing device is used for suturing a sampling channel, the suturing device extends into a preset part in the sampling channel to adsorb the target tissue on one side wall of the sampling channel, and the adsorbed target tissue protrudes out of the inner wall of the sampling channel; therefore, the suture mechanism can suture the target tissue sucked into the window. Therefore, a binding and pressing mode in the related technology does not need to be adopted, so that the rehabilitation time can be shortened, and the postoperative risk is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a suturing device. Background Art

[0002] After using a puncture biopsy instrument to puncture and sample the patient's tissue, such as the breast, a columnar sampling channel will be formed in the patient's tissue, and the tissue around the channel cannot be tightly and firmly attached in a short period of time after the operation. In the related art, the patient's chest is usually bound and compressed after the operation to make the tissue around the sampling channel fit together to achieve recovery. However, not only does the binding time take a long time, causing discomfort to the patient, but the binding method has low reliability and safety, and there is a high postoperative risk. Summary of the invention

[0003] Based on this, it is necessary to overcome the defects of the prior art and provide a suturing device, which can shorten the recovery time and reduce the postoperative risks.

[0004] A suturing device, comprising:

[0005] An outer sleeve, wherein a distal side wall of the outer sleeve is provided with a window for the target tissue to enter, the window is connected to an internal cavity of the outer sleeve, and the internal cavity is also used to connect to a negative pressure source; and

[0006] A suturing mechanism is disposed in the outer sleeve and is used for suturing the target tissue sucked into the window.

[0007] In one embodiment, the suture mechanism comprises:

[0008] A puncture member, which is disposed in the outer sleeve and has a threading hole, and can be moved to move the needle toward the distal end or withdraw the needle toward the proximal end; and

[0009] A thread hooking member, wherein the thread hooking member is movably arranged in the outer sleeve, and the active position of the thread hooking member includes a thread hooking position and a thread loosening position. The thread hooking member is used to move to the thread hooking position to hook the suture when the puncture member is withdrawn to move the suture, and the thread hooking member is also used to move to the thread loosening position to loosen the suture when the puncture member is inserted.

[0010] In one embodiment, the suturing device also includes a first push-pull member, which is movably disposed in the outer sleeve and is transmission-connected to the thread hooking member. The first push-pull member can drive the thread hooking member to and from the thread hooking position and the thread loosening position by reciprocating along the axial direction Z of the outer sleeve.

[0011] In one embodiment, the thread hooking member is swingably disposed at the distal end of the outer sleeve, a sliding groove is disposed on the first push-pull member, and the thread hooking member has a sliding portion slidably disposed in the sliding groove, and the first push-pull member can drive the thread hooking member to swing back and forth between the thread hooking position and the thread releasing position by reciprocatingly moving along the axial direction of the outer sleeve.

[0012] In one embodiment, the suturing mechanism further includes a second push-pull member, which is movably inserted into the outer sleeve; and the piercing member is disposed at the distal end of the second push-pull member.

[0013] In one embodiment, the first push-pull member includes a first push rod that slides with the inner wall of the outer sleeve along the axial direction Z; and / or the second push-pull member includes a second push rod that slides with the inner wall of the outer sleeve along the axial direction Z.

[0014] In one embodiment, the first push rod is driven by the second push rod, so that the thread hooking member is driven by the puncture member; or, the second push rod is driven by the first push rod, so that the puncture needle is driven by the thread hooking member.

[0015] In one embodiment, the suturing device further comprises a housing connected to the outer sleeve;

[0016] The suturing mechanism further includes a first elastic member and a second elastic member disposed inside the housing;

[0017] The first push-pull member further comprises a first connection seat connected to the first push rod, the first connection seat is arranged outside the outer sleeve and is movably arranged inside the housing along the axial direction Z;

[0018] The second push-pull member further comprises a second connecting seat connected to the second push rod, the second connecting seat being arranged outside the outer sleeve and movably arranged inside the housing along the axial direction Z;

[0019] Among them, the second connecting seat is provided with a first abutment portion and a second abutment portion which are arranged in sequence along the needle insertion direction, and the first connecting seat is provided with a third abutment portion located between the first abutment portion and the second abutment portion, and the third abutment portion is respectively abutted and cooperated with the first abutment portion and the second abutment portion and can move back and forth along the axial direction Z in the interval area between the first abutment portion and the second abutment portion, and the third abutment portion abuts with the second abutment portion through the first elastic member, and the first abutment portion abuts with the third abutment portion through the second elastic member.

[0020] In one embodiment, the suturing mechanism also includes a third elastic member arranged inside the shell; the second push-pull member also includes a movable seat connected to the second connecting seat and movably arranged inside the shell along the axial direction Z; the movable seat is used to be connected to a power source, the movable seat is provided with a fourth abutment portion, the inner wall of the shell is provided with a fifth abutment portion, and the fourth abutment portion abuts against the fifth abutment portion through the third elastic member.

[0021] In one embodiment, the first connecting seat is provided with a first travel groove extending along the axial direction Z, and the inner wall of the shell is provided with a first limiting portion, and the first limiting portion is movably provided in the first travel groove along the axial direction Z; and / or, the second connecting seat is provided with a second travel groove extending along the axial direction Z, and the inner wall of the shell is provided with a second limiting portion, and the second limiting portion is movably provided in the second travel groove along the axial direction Z.

[0022] In one embodiment, the suturing device further comprises a suction piece for connecting to the negative pressure source, and the suction piece is passed through the interior of the outer sleeve and the interior of the shell.

[0023] In one embodiment, the first push rod and / or the first connecting seat also slides with the outer wall of the suction pipe along the axial direction Z; the second push rod and / or the second connecting seat slides with the outer wall of the suction pipe along the axial direction Z.

[0024] In one embodiment, the suturing device further comprises a winding wheel for unwinding the suture thread.

[0025] In one embodiment, the suturing device further comprises a suction piece connected to the negative pressure source, the suction piece is passed through the interior of the outer sleeve, and the distal end of the suction piece extends to the side of the window.

[0026] When the suturing device is used to sew a sampling channel, for example, the suturing device extends into a preset position inside the sampling channel and absorbs the target tissue on one side wall of the sampling channel. The absorbed target tissue protrudes from the inner wall of the sampling channel, so that the suture mechanism can sew the target tissue sucked into the window. It can be seen that there is no need to adopt the binding and pressing method in the related art, thereby shortening the recovery time and reducing the postoperative risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a structural diagram of a suturing device according to an embodiment of the present application in a needle withdrawal state.

[0028] FIG. 2 is an enlarged structural diagram of FIG. 1 at point A. FIG.

[0029] FIG. 3 is an enlarged structural diagram of FIG. 1 at point B. FIG.

[0030] FIG. 4 is an enlarged structural diagram of FIG. 1 at position C. FIG.

[0031] FIG. 5 is a structural diagram of a suturing device according to an embodiment of the present application in a needle insertion state.

[0032] FIG. 6 is an enlarged structural diagram of FIG. 5 at position D. FIG.

[0033] FIG. 7 is an enlarged structural diagram of point E in FIG. 5 .

[0034] FIG8 is an enlarged structural diagram of FIG5 at F.

[0035] FIG. 9 is a diagram of a suturing device according to an embodiment of the present application in a first working state.

[0036] FIG. 10 is a diagram of a suturing device according to an embodiment of the present application in a second working state.

[0037] FIG. 11 is a diagram of a suturing device according to an embodiment of the present application in a third working state.

[0038] FIG. 12 is a diagram of the suturing device according to an embodiment of the present application in a fourth working state.

[0039] FIG. 13 is a diagram of the suturing device according to an embodiment of the present application in the fifth working state.

[0040] 10. outer sleeve; 11. window; 20. puncture member; 21. threading hole; 30. hook member; 31. sliding part; 40. first push-pull member; 41. first push rod; 42. first connecting seat; 421. third abutting part; 422. first stroke groove; 43. push block; 431. slide groove; 50. second push-pull member; 51. second push rod; 52. second connecting seat; 521. first abutting part; 522. second abutting part; 523. mounting groove; 524. second stroke groove; 53. moving seat; 531. fourth abutting part; 60. suction member; 61. suction part; 70. shell; 71. fifth abutting part; 72. first limiting part; 73. second limiting part; 81. first elastic member; 82. second elastic member; 83. third elastic member; 91. first mounting seat; 92. connecting tube; 93. target tissue. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0042] In the description of the present application, it is still necessary to explain that the proximal end refers to the end of the instrument or component close to the operator, and the distal end refers to the end of the instrument or component away from the operator; the axial direction refers to the direction parallel to the line connecting the distal and proximal centers of the instrument or component, the radial direction refers to the direction perpendicular to the axial direction, and the circumferential direction refers to the direction surrounding the axial direction.

[0043] Referring to Figures 1 to 8, Figure 1 shows a structural diagram of a suturing device in a needle withdrawal state according to an embodiment of the present application. Figures 2 to 4 respectively show enlarged structural diagrams of Figure 1 at A, B and C. Figure 5 shows a structural diagram of a suturing device in a needle insertion state according to an embodiment of the present application. Figures 6 to 8 respectively show enlarged structural diagrams of Figure 1 at D, E and F. A suturing device is provided in an embodiment of the present application, and the suturing device includes: an outer sleeve 10 and a suturing mechanism. The distal side wall of the outer sleeve 10 is provided with a window 11 for the target tissue 93 to enter, and the window 11 is connected to the internal cavity of the outer sleeve 10, and the internal cavity is also used to connect to a negative pressure source. The suturing mechanism is arranged in the outer sleeve 10, and is used to suturing the target tissue 93 sucked into the window 11.

[0044] When the suturing device is used to suturing a sampling channel, for example, the suturing device extends into a preset position inside the sampling channel and absorbs the target tissue 93 on one side wall of the sampling channel. The absorbed target tissue 93 protrudes from the inner wall of the sampling channel, so that the suture mechanism can suturing the target tissue 93 sucked into the window 11. It can be seen that there is no need to adopt the binding and pressing method in the related art, thereby shortening the recovery time and reducing the postoperative risk.

[0045] Please refer to Figures 9 to 13. In some embodiments, the suture mechanism includes a piercing member 20 and a thread hooking member 30. The piercing member 20 is arranged in the outer sleeve 10, and a threading hole 21 is provided on the piercing member 20, so that the suture can be threaded in the threading hole 21. In addition, the piercing member 20 can be moved to the distal end or withdraw the needle to the proximal end. The thread hooking member 30 is movably arranged in the outer sleeve 10, and the active position of the thread hooking member 30 includes a thread hooking position and a thread loosening position. The thread hooking position is shown in Figures 9, 11 and 13, and the thread loosening position is shown in Figures 10 and 12. The thread hooking member 30 is used to move to the thread hooking position to hook the suture when the piercing member 20 withdraws the needle, as shown in Figures 10 to 11 or Figures 12 to 13; the thread hooking member 30 is also used to move to the thread loosening position to loosen the suture when the piercing member 20 is inserted, as shown in Figures 11 to 12.

[0046] Specifically, the suturing operation of, for example, a sampling channel includes the following steps:

[0047] Step S110, the suturing device is extended into a preset position inside the sampling channel, at which time the puncture member 20 is in the needle withdrawal position, and the thread hooking member 30 is in the thread hooking position, as shown in FIG9 ;

[0048] Step S120, the negative pressure source generates negative pressure to absorb the target tissue 93 on one side wall of the sampling channel, and the absorbed target tissue 93 protrudes from the inner wall of the sampling channel, driving the puncture member 20 to move so that the suture thread passes through the target tissue 93, and at the same time, the thread hooking member 30 moves from the thread hooking position to the thread loosening position to avoid interference between the thread hooking member 30 and the puncture member 20, as shown in FIG10;

[0049] Step S130, the puncture member 20 is retracted, and the thread hooking member 30 is moved from the thread loosening position to the thread hooking position, and the suture thread passing through the target tissue 93 can be smoothly hooked during the movement to the thread hooking position, as shown in FIG. 11 ;

[0050] Step S140, the suturing device can be rotated as a whole at a certain angle so that the window 11 faces other parts of the sampling channel, and can also maintain the same position. When the suturing device needs to be rotated to other positions, the negative pressure source is first released to avoid interference with the target tissue 93 during the rotation process. The suturing device is specifically introduced by taking the rotation of the suturing device to 180° as an example. The negative pressure source adsorbs the target tissue 93 on the other opposite side wall of the sampling channel, and the adsorbed target tissue 93 protrudes from the inner wall of the sampling channel, so as to drive the puncture member 20 to move so that the suture thread passes through the target tissue 93, and at the same time, the thread hooking member 30 moves from the thread hooking position to the thread loosening position to avoid interference between the thread hooking member 30 and the puncture member 20, as shown in FIG. 12;

[0051] Step S150, the puncture member 20 is retracted, and at the same time, the thread hooking member 30 is moved from the thread loosening position to the thread hooking position. In the process of moving to the thread hooking position, the suture on the puncture member 20 passing through the target tissue 93 can be smoothly hooked, and the suture hooked by the thread hooking member 30 passes through the suture passing through the target tissue 93 as in step S130, as specifically shown in FIG. 13 .

[0052] On the basis of the above-mentioned embodiment, the suturing device further comprises a first push-pull member 40. The first push-pull member 40 is movably disposed in the outer sleeve 10 and is transmission-connected with the thread hooking member 30, and the first push-pull member 40 can drive the thread hooking member 30 to and fro between the thread hooking position and the thread loosening position by reciprocating along the axial direction Z of the outer sleeve 10.

[0053] Specifically, the thread hooking member 30 is swingably arranged at the distal end of the outer sleeve 10. A slide groove 431 is arranged on the first push-pull member 40, and the thread hooking member 30 has a sliding portion 31 slidably arranged in the slide groove 431. The first push-pull member 40 can drive the thread hooking member 30 to swing back and forth between the thread hooking position and the thread loosening position by reciprocating along the axial direction of the outer sleeve 10. In this way, when the first push-pull member 40 reciprocates along the axial direction of the outer sleeve 10, the sliding portion 31 moves along the slide groove 431 in a corresponding manner, thereby driving the thread hooking member 30 to swing back and forth between the thread hooking position and the thread loosening position. In this way, the overall structure can be made compact and less space is occupied.

[0054] 9 to 13 , in some embodiments, the suturing mechanism further includes a second push-pull member 50, which is movably disposed in the outer sleeve 10. The piercing member 20 is disposed at the distal end of the second push-pull member 50. Specifically, when the second push-pull member 50 drives the puncture member 20 to withdraw the needle, the first push-pull member 40 also synchronously drives the thread hook member 30 to hook the suture thread passing through the target tissue 93, preventing the suture thread from withdrawing from the target tissue 93 with the puncture member 20; in addition, when the second push-pull member 50 drives the puncture member 20 to puncture the target tissue 93 again, the first push-pull member 40 also synchronously drives the thread hook member 30 to loosen the suture thread hooked last time, so that the thread hook member 30 will not interfere with the puncture member 20 in the needle-entering state, and the puncture member 20 can drive the suture thread to smoothly complete the puncture operation and enter the last threading coil, and when the puncture member 20 drives the suture thread to withdraw from the target tissue 93 again, the first push-pull member 40 also synchronously drives the thread hook member 30 to hook the suture thread passing through the target tissue 93 again, preventing the suture thread from withdrawing from the target tissue 93 with the puncture member 20. In this way, with the cooperation of the thread hook member 30, the suturing work of the target tissue 93 can be easily completed. In addition, the second push-pull member 50 and the first push-pull member 40 can be movably inserted into the interior of the outer sleeve 10, thereby entering the sampling channel together with the outer sleeve 10, and generating negative pressure through a negative pressure source connected to the internal cavity of the outer sleeve 10 to suck the target tissue 93 into the outer sleeve 10, thereby achieving the suturing operation of the target tissue 93. In this way, the second push-pull member 50 and the first push-pull member 40 will not directly contact the inner wall of the sampling channel, which can reduce the collision and friction damage to the inner wall tissue of the sampling channel.

[0055] In one embodiment, the first push-pull member 40 includes a first push rod 41 that is slidably matched with the inner wall of the outer sleeve 10 along the axial direction Z. In addition, the second push-pull member 50 includes a second push rod 51 that is slidably matched with the inner wall of the outer sleeve 10 along the axial direction Z. In this way, during the suturing operation, the first push rod 41 slides on the inner wall of the outer sleeve 10 along the axial direction Z, and the second push rod 51 slides on the inner wall of the outer sleeve 10 along the axial direction Z, and the movement stability is high, which is conducive to the suturing operation.

[0056] In order to prevent the first push rod 41 and the second push rod 51 from moving in the circumferential direction of the outer sleeve 10, optionally, a first slide groove is formed on the inner wall of the outer sleeve 10 along the axial direction Z, and a first slider slidably arranged on the first slide groove is provided on the first push rod 41. In this way, the first slider moves along the first slide groove, guiding the movement of the second push-pull member 50, and preventing the second push-pull member 50 from rotating inside the outer sleeve 10. Similarly, a second slide groove is formed on the inner wall of the outer sleeve 10 along the axial direction Z, and a second slider slidably arranged on the second slide groove is provided on the second push rod 51. The second slider moves along the second slide groove, guiding the movement of the first push-pull member 40, and preventing the first push-pull member 40 from rotating inside the outer sleeve 10.

[0057] In some embodiments, the first push rod 41 is driven by the second push rod 51, so that the thread hooking member 30 is driven by the puncture member 20, so that when the thread hooking member 30 is performing a thread hooking action or a thread loosening action, the puncture member 20 can synchronously withdraw or advance the needle, so that when suturing, only the axial sliding power of the second push rod 51 is provided, and the thread hooking member 30 and the puncture member 20 can be moved accordingly, which is conducive to simplifying the suturing operation. Of course, in some optional solutions, the second push rod 51 can also be driven by the first push rod 41, so that the puncture needle is driven by the thread hooking member 30.

[0058] 3 and 7, in one embodiment, the suturing device further comprises a housing 70 connected to the outer sleeve 10. Optionally, the suturing device further comprises a first mounting seat 91 mounted inside the housing 70. The proximal end of the outer sleeve 10 is fixedly connected to the first mounting seat 91. In this way, the outer sleeve 10 can be stably connected to the housing 70.

[0059] In addition, the first push-pull member 40 further includes a first connection seat 42 connected to the first push rod 41. The first connection seat 42 is arranged outside the outer sleeve 10 and is movably arranged inside the housing 70 along the axial direction Z. Similarly, the second push-pull member 50 further includes a second connection seat 52 connected to the second push rod 51. The second connection seat 52 is arranged outside the outer sleeve 10 and is movably arranged inside the housing 70 along the axial direction Z.

[0060] Please refer to FIG. 2 and FIG. 6 . In one embodiment, the suturing device further includes a first elastic member 81 disposed inside the housing 70. The second connecting seat 52 is provided with a first abutting portion 521 and a second abutting portion 522 sequentially disposed along the needle insertion direction. The first connecting seat 42 is provided with a third abutting portion 421 located between the first abutting portion 521 and the second abutting portion 522. The third abutting portion 421 abuts and cooperates with the first abutting portion 521 and the second abutting portion 522 respectively and can move back and forth in the interval area between the first abutting portion 521 and the second abutting portion 522 along the axial direction Z. The third abutting portion 421 abuts against the second abutting portion 522 through the first elastic member 81. In this way, when the second connection seat 52 is driven to move the needle in the axial direction Z, the first abutment portion 521 of the second connection seat 52 abuts against the third abutment portion 421 to drive the third abutment portion 421 to move in the axial direction Z, and the third abutment portion 421 compresses the first elastic member 81, and drives the first connection seat 42 to move in the axial direction Z. In this way, on the one hand, the puncture action of the puncture member 20 can be achieved, and on the other hand, the hooking member 30 can be driven to move to the position of releasing the suture line to avoid interference with the puncture work of the suture line. In addition, when the second connection seat 52 is driven to move the needle back in the axial direction Z, the first connection seat 42 is driven to move in the axial direction Z under the action of the reset force of the second elastic member 82, so that on the one hand, the puncture member 20 can be driven to withdraw the needle, and on the other hand, the hooking member 30 can be driven to move to the position of hooking the suture line. In addition, the second connection seat 52 can be connected to the power source, and the first connection seat 42 does not need to be connected to the power source, so that the structure is relatively simplified.

[0061] Please refer to FIG. 2 and FIG. 6 . In one embodiment, the suturing device further includes a second elastic member 82 disposed inside the housing 70. The first abutting portion 521 abuts against the third abutting portion 421 through the second elastic member 82. Thus, in the process of driving the second connecting seat 52 to move along the axial direction Z to insert the needle, the second connecting seat 52 drives the third abutting portion 421 to cause the first elastic member 81 to be elastically compressed to drive the first connecting seat 42 to move along the axial direction Z. The first connecting seat 42 drives the hooking member 30 to move from the position of hooking the suture to the position of releasing the suture through the second push rod 51. When the position of the first connecting seat 42 is fixed, the second elastic member 82 can continue to be elastically compressed, so that the second push-pull member 50 can continue to insert the needle along the axial direction Z relative to the first push-pull member 40, so that the second push-pull member 50 can drive the puncture member 20 to insert the needle to complete the puncture action of the target tissue 93.

[0062] In one embodiment, the suturing device further includes a third elastic member 83 disposed inside the housing 70. The second push-pull member 50 further includes a movable seat 53 connected to the second connecting seat 52 and movably disposed inside the housing 70 along the axial direction Z. The movable seat 53 is used to be connected to a power source, and the movable seat 53 is provided with a fourth abutment portion 531, and the inner wall of the housing 70 is provided with a fifth abutment portion 71, and the fourth abutment portion 531 abuts against the fifth abutment portion 71 through the third elastic member 83. Specifically, the power source includes but is not limited to a manual driving structure such as a manual pressing structure, a manual push-pull structure or a manual toggle structure, or an electric driving structure such as a motor screw, a cylinder or a hydraulic cylinder, as long as it can realize the movement of the movable seat 53 along the axial direction Z. In this embodiment, the power source is specifically selected as a manual driving structure, and the axial direction Z movement of the movable seat 53 is realized under the driving force of the manual driving structure. Needle insertion, the third elastic member 83 is compressed; when the manual driving structure is released, the reset force of the third elastic member 83 is used to realize the movement reset of the movable seat 53.

[0063] In some embodiments, the first elastic member 81 , the second elastic member 82 and the third elastic member 83 are each independently adjusted and configured according to actual needs, including but not limited to being a spring, an elastic strip or an elastic block, etc.

[0064] Please refer to FIG. 2 and FIG. 6 . In some specific embodiments, the first elastic member 81 and the second elastic member 82 are both springs. In addition, the inner wall of the second connecting seat 52 is formed with a mounting groove 523. The two opposite side walls of the mounting groove 523 along the axial direction Z are respectively, for example, a first abutting portion 521 and a second abutting portion 522. The third abutting portion 421 extends into the mounting groove 523 and can move in the mounting groove 523 along the axial direction Z. The first elastic member 81 and the second elastic member 82 are both disposed in the mounting groove 523.

[0065] In some specific embodiments, the fourth abutting portion 531 is disposed around the circumference of the movable seat 53, the fifth abutting portion 71 is disposed around the circumference of the inner wall of the housing 70, the third elastic member 83 is a spring, and the fourth abutting portion 531 and the fifth abutting portion 71 are abutted at opposite ends of the spring, respectively. Under the drive of the power source, the movable seat 53 moves relative to the housing in the axial direction Z, which can compress the third elastic member 83. When the movable seat 53 is released, the movable seat 53 is reset under the drive of the third elastic member 83.

[0066] Please refer to FIG. 3 and FIG. 7 . In one embodiment, the first connection seat 42 is provided with a first travel groove 422 extending along the axial direction Z, and the inner wall of the housing 70 is provided with a first limiting portion 72, which is movably disposed in the first travel groove 422 along the axial direction Z. In addition, the second connection seat 52 is provided with a second travel groove 524 extending along the axial direction Z, and the inner wall of the housing 70 is provided with a second limiting portion 73, which is movably disposed in the second travel groove 524 along the axial direction Z. In this way, the first limiting portion 72 moves in the first travel groove 422, and plays a limiting role in the movement stroke of the first push-pull member 40 along the axial direction Z, so that the piercing member 20 moves within a preset stroke range. Specifically, as shown in Figures 3 and 4, when the first pushing and pulling member 40 drives the thread hooking member 30 to move to the thread hooking position, the first limiting portion 72 abuts against one side wall of the first travel groove 422; as shown in Figures 7 and 8, when the first pushing and pulling member 40 drives the thread hooking member 30 to move to the position of releasing the suture line, the first limiting portion 72 abuts against the other side wall of the first travel groove 422.

[0067] Similarly, the second limiting portion 73 moves in the second stroke groove 524, limiting the movement stroke of the second push-pull member 50 along the axial direction Z, so that the thread hooking member 30 moves within the preset stroke range. Specifically, as shown in Figures 7 and 8, when the second push-pull member 50 drives the piercing member 20 to advance the needle to the limit position, the second limiting portion 73 abuts against one side wall of the second stroke groove 524; as shown in Figures 3 and 4, when the second push-pull member 50 drives the piercing member 20 to withdraw the needle to the limit position, the second limiting portion 73 abuts against the other side wall of the second stroke groove 524.

[0068] In some embodiments, the suturing device further includes a suction piece 60 for connecting to a negative pressure source. The suction piece 60 can be arranged outside the outer tube 10 or penetrated inside the outer tube 10. The specific setting position and structural form can be flexibly adjusted and arranged according to actual needs, as long as the negative pressure generated at the suction part 61 can suck the target tissue 93 into the window 11, so as to perform a corresponding suturing action on the target tissue 93. Among them, when the suction piece 60 is penetrated inside the outer tube 10, the suction part 61 of the suction piece 60 is arranged corresponding to the position of the window 11, for example, the distal end of the suction piece 60, that is, the suction part 61, extends to the side of the window 11, so that when the suction piece 60 generates negative pressure, the target tissue 93 can be sucked into the window 11. On the contrary, when the suction piece 60 is located outside the outer tube 10, for example, extending along the outer wall of the outer tube 10, the suction portion 61 of the suction piece 60 can be extended into the inner part of the outer tube 10 through the window 11 and arranged corresponding to the position of the window 11; or a through hole can be opened on the outer tube 10, and the suction portion 61 is connected to the through hole so as to generate negative pressure at the window 11 to suck the target tissue 93; or the suction portion 61 can be extended through the outer tube 10 into the inner part of the outer tube 10 so as to generate negative pressure at the window 11 to suck the target tissue 93.

[0069] In this embodiment, in order to minimize the damage caused by collision, friction and other aspects of the suction piece 60 to the tissue during the operation, the suction piece 60 is specifically installed inside the outer sleeve 10 as an example, but it is not limited to this.

[0070] Referring to FIGS. 1 to 4 , in one embodiment, the suction member 60 is disposed inside the outer sleeve 10 and inside the housing 70. The suction member 60 includes but is not limited to a suction tube. In this way, the overall layout can be compact, the size of the device is small, and the damage to the tissue is small.

[0071] In some embodiments, a connecting tube 92 is provided at the proximal end of the suction tube. The connecting tube 92 is, for example, a hose, and the connecting tube 92 is used to connect to the negative pressure device.

[0072] In some embodiments, the suturing device further comprises a winding wheel. The winding wheel is used for unwinding the suture thread. Specifically, the winding wheel is, for example, arranged on the housing 70.

[0073] Please refer to FIGS. 1 to 4 . In some embodiments, the first push rod 41 not only abuts against the inner wall of the outer sleeve 10 and slides along the axial direction Z, but also abuts against the outer wall of the suction pipe and slides along the axial direction Z, so that the first push rod 41 has good operation stability, a compact overall structure, and a small volume. In addition, the second connecting seat 52 not only abuts against the inner wall of the housing 70 and slides along the axial direction Z, but also abuts against the outer wall of the suction pipe and slides along the axial direction Z, which can further improve the operation stability of the second push-pull member 50. In addition, the movable seat 53 can be slidably sleeved on the outside of the suction member 60, for example.

[0074] Similar to the arrangement of the second push-pull member 50 slidingly cooperating with the outer sleeve 10, the shell 70, and the suction pipe fitting, the first push-pull member 40 correspondingly slides with the outer sleeve 10, the shell 70, and the suction pipe fitting, thereby improving the motion stability of the first push-pull member 40, and at the same time, the overall structure of the device is compact and the volume size is small. Specifically, the second push rod 51 not only abuts against the inner wall of the outer sleeve 10 and slides along the axial direction Z, but also abuts against the outer wall of the suction pipe fitting and slides along the axial direction Z, so that the second push rod 51 has good operation stability, a compact overall structure, and a small volume size. In addition, the first connecting seat 42 not only abuts against the inner wall of the shell 70 and slides along the axial direction Z, but also abuts against the outer wall of the suction pipe fitting and slides along the axial direction Z, which can further improve the operation stability of the first push-pull member 40.

[0075] In some embodiments, in order to improve the operation stability of the second push-pull member 50, the side wall of the second push-pull member 50 facing the outer sleeve 10 is adapted to the shape of the inner wall of the outer sleeve 10, and the side wall of the second push-pull member 50 facing the suction pipe is adapted to the shape of the outer wall of the suction pipe, so that the second push-pull member 50 can be stably operated along the axial direction Z. Similarly, the side wall of the first push-pull member 40 facing the outer sleeve 10 is adapted to the shape of the inner wall of the outer sleeve 10, and the side wall of the first push-pull member 40 facing the suction pipe is adapted to the shape of the outer wall of the suction pipe.

[0076] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0077] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0078] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0079] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0080] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0081] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A suturing device, characterized in that: The suturing device comprises: An outer sleeve, wherein a distal side wall of the outer sleeve is provided with a window for the target tissue to enter, the window is connected to an internal cavity of the outer sleeve, and the internal cavity is also used to connect to a negative pressure source; and A suturing mechanism is disposed in the outer sleeve and is used for suturing the target tissue sucked into the window.

2. The suturing device according to claim 1, characterized in that: The suture mechanism comprises: A puncture member, which is disposed in the outer sleeve and has a threading hole, and can be moved to move the needle toward the distal end or withdraw the needle toward the proximal end; and A thread hooking member, wherein the thread hooking member is movably arranged in the outer sleeve, and the active position of the thread hooking member includes a thread hooking position and a thread loosening position. The thread hooking member is used to move to the thread hooking position to hook the suture when the puncture member is withdrawn to move the suture, and the thread hooking member is also used to move to the thread loosening position to loosen the suture when the puncture member is inserted.

3. The suturing device according to claim 2, characterized in that: The suturing device also includes a first push-pull member, which is movably arranged in the outer sleeve and is transmission-connected to the thread hooking member. The first push-pull member can drive the thread hooking member to and from the thread hooking position and the thread loosening position by reciprocating along the axial direction Z of the outer sleeve.

4. The suturing device according to claim 3, characterized in that: The thread hooking member is swingably arranged at the distal end of the outer sleeve, a sliding groove is arranged on the first push-pull member, and the thread hooking member has a sliding portion slidably arranged in the sliding groove. The first push-pull member can drive the thread hooking member to swing back and forth between the thread hooking position and the thread releasing position by reciprocating movement along the axial direction of the outer sleeve.

5. The suturing device according to claim 3, characterized in that: The suturing mechanism further comprises a second push-pull member, which is movably inserted into the outer sleeve; and the piercing member is arranged at the distal end of the second push-pull member.

6. The suturing device according to claim 5, characterized in that: The first push-pull member includes a first push rod that is slidably matched with the inner wall of the outer sleeve along the axial direction Z; and / or the second push-pull member includes a second push rod that is slidably matched with the inner wall of the outer sleeve along the axial direction Z.

7. The suturing device according to claim 6, characterized in that: The first push rod is driven by the second push rod, so that the thread-hooking member is driven by the puncture member; or the second push rod is driven by the first push rod, so that the puncture needle is driven by the thread-hooking member.

8. The suturing device according to claim 6, characterized in that: The suturing device also includes a housing connected to the outer sleeve; The suturing mechanism further includes a first elastic member and a second elastic member disposed inside the housing; The first push-pull member further comprises a first connection seat connected to the first push rod, the first connection seat is arranged outside the outer sleeve and is movably arranged inside the housing along the axial direction Z; The second push-pull member further comprises a second connecting seat connected to the second push rod, the second connecting seat being arranged outside the outer sleeve and movably arranged inside the housing along the axial direction Z; Among them, the second connecting seat is provided with a first abutment portion and a second abutment portion which are arranged in sequence along the needle insertion direction, and the first connecting seat is provided with a third abutment portion located between the first abutment portion and the second abutment portion, and the third abutment portion is respectively abutted and cooperated with the first abutment portion and the second abutment portion and can move back and forth along the axial direction Z in the interval area between the first abutment portion and the second abutment portion, and the third abutment portion abuts with the second abutment portion through the first elastic member, and the first abutment portion abuts with the third abutment portion through the second elastic member.

9. The suturing device according to claim 8, characterized in that: The suturing mechanism also includes a third elastic member arranged inside the shell; the second push-pull member also includes a movable seat connected to the second connecting seat and movably arranged inside the shell along the axial direction Z; the movable seat is used to be connected to a power source, the movable seat is provided with a fourth abutment portion, and the inner wall of the shell is provided with a fifth abutment portion, and the fourth abutment portion abuts against the fifth abutment portion through the third elastic member.

10. The suturing device according to claim 8, characterized in that: The first connecting seat is provided with a first travel groove extending along the axial direction Z, and the inner wall of the shell is provided with a first limiting portion, and the first limiting portion is movably arranged in the first travel groove along the axial direction Z; and / or, the second connecting seat is provided with a second travel groove extending along the axial direction Z, and the inner wall of the shell is provided with a second limiting portion, and the second limiting portion is movably arranged in the second travel groove along the axial direction Z.

11. The suturing device according to claim 8, characterized in that: The suturing device also includes a suction piece for connecting to the negative pressure source, and the suction piece is arranged inside the outer sleeve and inside the shell.

12. The suturing device according to claim 11, characterized in that: The first push rod and / or the first connecting seat also slides with the outer wall of the suction pipe along the axial direction Z; the second push rod and / or the second connecting seat slides with the outer wall of the suction pipe along the axial direction Z.

13. The suturing device according to any one of claims 2 to 12, characterized in that: The suturing device also includes a winding wheel, which is used for unwinding the suture thread.

14. The suturing device according to claim 1, characterized in that: The suturing device also includes a suction piece connected to the negative pressure source. The suction piece is inserted into the inner part of the outer sleeve, and the distal end of the suction piece extends to the side of the window.

Images