Suturing device

Abstract

The utility model 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] This application relates to the technical field of medical devices, and particularly to a suture device. Background Art

[0002] After using a puncture biopsy instrument to perform puncture sampling of breast tissue on a 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 closely and firmly adhered within a short time after the operation. In related technologies, the chest of the patient is usually bandaged after the operation to make the tissue around the sampling channel adhere to each other to achieve recovery. However, not only is the bandaging time long, causing discomfort to the patient, but also the bandaging method has low reliability and low safety, with a relatively 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 suture device that can shorten the recovery time and reduce the postoperative risk.

[0004] A suture device, the suture device comprising:

[0005] An outer sleeve, a window for allowing a target tissue to enter is provided on the distal side wall of the outer sleeve, the window is communicated with the internal cavity of the outer sleeve, and the internal cavity is further used for communicating with a negative pressure source; and

[0006] A suture mechanism, the suture mechanism is arranged 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, the puncture member is arranged in the outer sleeve, a thread passing hole is provided on the puncture member, and the puncture member can move axially distally for needle insertion or proximally for needle withdrawal; and

[0009] A thread hooking member, the thread hooking member is movably arranged in the outer sleeve, the movable positions of the thread hooking member include a thread hooking position and a thread releasing position, the thread hooking member is used for moving to the thread hooking position to hook the suture when the puncture member withdraws the needle, and the thread hooking member is further used for moving to the thread releasing position to release the suture when the puncture member inserts the needle.

[0010] In one embodiment, the suture device further comprises a first push-pull member, the first push-pull member is movably arranged in the outer sleeve and is in transmission connection with the thread hooking member, and the first push-pull member can drive the thread hooking member to reciprocate between the thread hooking position and the thread releasing position by reciprocatingly moving 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 chute is provided on the first push-pull member. The thread-hooking member has a sliding portion slidably disposed in the chute. The first push-pull member can drive the thread-hooking member to swing reciprocally between a thread-hooking position and a thread-loosing position by reciprocally moving along the axial direction of the outer sleeve.

[0012] In one embodiment, the suture mechanism further includes a second push-pull member movably passing through the outer sleeve; the puncturing 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 slidably engaged 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 slidably engaged 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 puncturing member; or, the second push rod is driven by the first push rod so that the puncturing needle is driven by the thread-hooking member.

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

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

[0017] The first push-pull member further includes a first connecting seat connected to the first push rod. The first connecting seat is disposed outside the outer sleeve and movably disposed inside the housing along the axial direction Z;

[0018] The second push-pull member further includes a second connecting seat connected to the second push rod. The second connecting seat is disposed outside the outer sleeve and movably disposed inside the housing along the axial direction Z;

[0019] Wherein, a first abutting portion and a second abutting portion are sequentially provided on the second connecting seat along the needle-inserting direction. A third abutting portion is provided on the first connecting seat between the first abutting portion and the second abutting portion. The third abutting portion is in abutting engagement with the first abutting portion and the second abutting portion respectively and can move back and forth in the interval region between the first abutting portion and the second abutting portion along the axial direction Z. The third abutting portion abuts against the second abutting portion through the first elastic member, and the first abutting portion abuts against the third abutting portion through the second elastic member.

[0020] In one embodiment, the suture mechanism further includes a third elastic member disposed inside the housing; the second push-pull member further includes a moving seat connected to the second connecting seat and movably disposed inside the housing along the axial direction Z; the moving seat is used to be connected to a power source, the moving seat is provided with a fourth abutting portion, and the inner wall of the housing is provided with a fifth abutting portion, and the fourth abutting portion abuts against the fifth abutting portion through the third elastic member.

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

[0022] In one embodiment, the suture device further includes a suction member for connecting to a negative pressure source, and the suction member penetrates through the inside of the outer sleeve and through the inside of the housing.

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

[0024] In one embodiment, the suture device further includes a thread take-up wheel for unreeling the suture.

[0025] In one embodiment, the suture device further includes a suction member connected to the negative pressure source, the suction member penetrates through the inside of the outer sleeve, and the distal end of the suction member extends beside the window.

[0026] For the above suture device, when performing a suture operation on, for example, a sampling channel, the suture device extends into a preset position inside the sampling channel, adsorbs the target tissue on one side wall of the sampling channel, and the adsorbed target tissue protrudes from the inner wall of the sampling channel, so as to facilitate the suture mechanism to suture the target tissue inhaled into the window. Thus, it can be seen that there is no need to adopt the tying and pressing method in the related art, thereby being able to shorten the recovery time and reduce the postoperative risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of the suture device in a needle-retracting state according to an embodiment of the present application.

[0028] Figure 2 is Figure 1 an enlarged structural diagram at A.

[0029] Figure 3 is Figure 1 The enlarged structure diagram at B.

[0030] Figure 4 is Figure 1 The enlarged structure diagram at C.

[0031] Figure 5 The structure diagram of the suture device according to an embodiment of the present application in the needle - inserting state.

[0032] Figure 6 is Figure 5 The enlarged structure diagram at D.

[0033] Figure 7 is Figure 5 The enlarged structure diagram at E.

[0034] Figure 8 is Figure 5 The enlarged structure diagram at F.

[0035] Figure 9 The diagram of the suture device according to an embodiment of the present application in the first working state.

[0036] Figure 10 The diagram of the suture device according to an embodiment of the present application in the second working state.

[0037] Figure 11 The diagram of the suture device according to an embodiment of the present application in the third working state.

[0038] Figure 12 The diagram of the suture device according to an embodiment of the present application in the fourth working state.

[0039] Figure 13 The diagram of the suture device according to an embodiment of the present application in the fifth working state.

[0040] 10. Outer sheath tube; 11. Window; 20. Piercing member; 21. Thread - passing hole; 30. Thread - hooking 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. Pushing block; 431. Chute; 50. Second push - pull member; 51. Second push rod; 52. Second connecting seat; 521. First abutting part; 522. Second abutting part; 523. Installation groove; 524. Second stroke groove; 53. Moving seat; 531. Fourth abutting part; 60. Suction member; 61. Suction part; 70. Housing; 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 pipe; 93. Target tissue. Detailed implementation manners

[0041] To make the above objects, features, and advantages of the present application more obvious and understandable, the following provides a detailed description of the specific implementation manners of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description 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 departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0042] In the description of the present application, it still needs to be noted 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 far from the operator; the axial direction refers to the direction parallel to the center line connecting the distal end and the proximal end 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] Refer to Figures 1 to 8 , Figure 1 which shows a structural diagram of the suture device according to an embodiment of the present application in the needle-retracting state. Figures 2 to 4 respectively show Figure 1 the enlarged structural diagrams at positions A, B, and C. Figure 5 which shows a structural diagram of the suture device according to an embodiment of the present application in the needle-advancing state. Figures 6 to 8 respectively show Figure 1 the enlarged structural diagrams at positions D, E, and F. A suture device provided by an embodiment of the present application includes: an outer sleeve 10 and a suture mechanism. A window 11 for allowing the target tissue 93 to enter is provided on the distal side wall of the outer sleeve 10. The window 11 communicates with the internal cavity of the outer sleeve 10, and the internal cavity is also used to communicate with a negative pressure source. The suture mechanism is disposed inside the outer sleeve 10 and is used to suture the target tissue 93 sucked into the window 11.

[0044] For the above suture device, when performing a suture operation on, for example, a sampling channel, the suture device extends into a preset position inside the sampling channel, adsorbs the target tissue 93 on one side wall of the sampling channel, and the adsorbed target tissue 93 protrudes from the inner wall of the sampling channel, so as to facilitate the suture mechanism to suture the target tissue 93 sucked into the window 11. Thus, it can be seen that there is no need to adopt the tying and pressing method in the related art, thereby being able to shorten the recovery time and reduce 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 disposed inside the outer sheath 10. A thread-passing hole 21 is provided on the piercing member 20, so that a suture can pass through the thread-passing hole 21. In addition, the piercing member 20 can move distally for needle insertion or proximally for needle retraction. The thread-hooking member 30 is movably disposed inside the outer sheath 10. The movable positions of the thread-hooking member 30 include a thread-hooking position and a thread-releasing position. The thread-hooking positions are as shown in Figure 9 , Figure 11 and Figure 13 ; the thread-releasing positions are as shown in Figure 10 and Figure 12 . The thread-hooking member 30 is used to move to the thread-hooking position to hook the suture when the piercing member 20 retracts 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-releasing position to release the suture when the piercing member 20 inserts the needle, as shown in Figures 11 to 12 .

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

[0047] Step S110: The suture device extends into a preset position inside the sampling channel. At this time, the piercing member 20 is in the needle-retracting position, and the thread-hooking member 30 is in the thread-hooking position, as shown in Figure 9 ;

[0048] Step S120: The negative pressure source generates negative pressure to adsorb the target tissue 93 on one side wall of the sampling channel. The adsorbed target tissue 93 protrudes from the inner wall of the sampling channel, driving the piercing member 20 to act so that the suture passes through the target tissue 93, and at the same time causing the thread-hooking member 30 to move from the thread-hooking position to the thread-releasing position to avoid interference between the thread-hooking member 30 and the piercing member 20, as shown in Figure 10 ;

[0049] Step S130: Retract the piercing member 20, and at the same time move the thread-hooking member 30 from the thread-releasing position to the thread-hooking position. During the movement to the thread-hooking position, the suture passing through the target tissue 93 can be smoothly hooked, as shown in Figure 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 position unchanged. 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 hooking member 30 moves from the hooking position to the loosening position to avoid interference between the hooking member 30 and the puncture member 20. Figure 12 As shown;

[0051] Step S150, the puncture member 20 is retracted, and 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 in step S130, specifically as follows Figure 13 shown.

[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] See also Figures 9 to 13, in some embodiments, the suture mechanism further includes a second push-pull member 50, and the second push-pull member 50 is movably disposed through the outer sleeve 10. The puncturing member 20 is disposed at the distal end of the second push-pull member 50. Specifically, during the process of the second push-pull member 50 driving the puncturing member 20 to retract the needle, the first push-pull member 40 also synchronously drives the wire-hooking member 30 to hook the suture passing through the target tissue 93 to prevent the suture from being withdrawn from the target tissue 93 along with the puncturing member 20; in addition, during the process of the second push-pull member 50 driving the puncturing member 20 to puncture the target tissue 93 again, the first push-pull member 40 also synchronously drives the wire-hooking member 30 to act to release the suture hooked last time, so that the wire-hooking member 30 will not interfere with the puncturing member 20 in the needle-inserting state, and the puncturing member 20 can drive the suture to successfully complete the puncturing operation and enter the previous threading coil, and when the puncturing member 20 drives the suture to withdraw from the target tissue 93 again, the first push-pull member 40 also synchronously drives the wire-hooking member 30 to hook the suture passing through the target tissue 93 again to prevent the suture from being withdrawn from the target tissue 93 along with the puncturing member 20. Thus, with the cooperation of the wire-hooking member 30, it is convenient to complete the suturing work of the target tissue 93. In addition, the second push-pull member 50 and the first push-pull member 40 are movably disposed inside the outer sleeve 10, and thus enter the sampling channel together with the outer sleeve 10, and a negative pressure source communicated with the inner cavity of the outer sleeve 10 generates a negative pressure to suck the target tissue 93 into the inside of the outer sleeve 10, and further the suturing operation of the target tissue 93 can be realized, so that the second push-pull member 50 and the first push-pull member 40 do not directly contact the inner wall of the sampling channel, and the collision and friction damage to the inner wall tissue of the sampling channel can be reduced.

[0055] In one embodiment, the first push-pull member 40 includes a first push rod 41 that slidably cooperates 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 slidably cooperates with the inner wall of the outer sleeve 10 along the axial direction Z. Thus, 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 relatively high, which is beneficial to realizing the suturing operation.

[0056] Among them, in order to prevent the first push rod 41 and the second push rod 51 from moving circumferentially along the outer sleeve 10, optionally, a first chute is formed on the inner wall of the outer sleeve 10 along the axial direction Z, and a first slider slidably disposed on the first chute is provided on the first push rod 41. In this way, the first slider moves along the first chute, 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 chute is formed on the inner wall of the outer sleeve 10 along the axial direction Z, and a second slider slidably disposed on the second chute is provided on the second push rod 51. The second slider moves along the second chute, 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 piercing member 20. Thus, when the thread hooking member 30 performs a thread hooking action or a thread releasing action, the piercing member 20 can perform a needle withdrawing or needle inserting action synchronously. In this way, when suturing, only the axial sliding power for the movement of the second push rod 51 needs to be provided, and the thread hooking member 30 and the piercing member 20 can both move accordingly, which is beneficial to simplifying the suturing operation. Of course, in some alternative solutions, the second push rod 51 can also be driven by the first push rod 41, so that the piercing needle is driven by the thread hooking member 30.

[0058] Please refer to Figure 3 and Figure 7 , in one embodiment, the suturing device further includes a housing 70 connected to the outer sleeve 10. Optionally, the suturing device further includes a first mounting seat 91 installed 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 disposed outside the outer sleeve 10 and is movably disposed 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 disposed outside the outer sleeve 10 and is movably disposed inside the housing 70 along the axial direction Z.

[0060] Please refer to Figure 2 and Figure 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 arranged in sequence along the needle - inserting 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 is in abutting cooperation 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. Thus, when driving the second connecting seat 52 to move along the axial direction Z for needle - inserting, the first abutting portion 521 of the second connecting seat 52 abuts against the third abutting portion 421 to drive the third abutting portion 421 to move along the axial direction Z. The third abutting portion 421 compresses the first elastic member 81 and drives the first connecting seat 42 to move along the axial direction Z. On the one hand, this can realize the puncturing action of driving the puncturing member 20, and on the other hand, it can also realize driving the thread - hooking member 30 to move to the position of releasing the suture thread to avoid interfering with the puncturing work of the suture thread. In addition, when driving the second connecting seat 52 to move along the axial direction Z for needle - withdrawing, under the action of the restoring force of the second elastic member 82, the first connecting seat 42 is driven to move along the axial direction Z. On the one hand, this can realize driving the puncturing member 20 to withdraw the needle, and on the other hand, it can also realize driving the thread - hooking member 30 to move to the position of hooking the suture thread. Additionally, the second connecting seat 52 is connected to the power source, and the first connecting seat 42 does not need to be connected to the power source, making the structure relatively simple.

[0061] Please refer to Figure 2 and Figure 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, during the process of driving the second connecting seat 52 to move along the axial direction Z for needle - inserting, the second connecting seat 52 drives the third abutting portion 421 to elastically compress the first elastic member 81 and drive the first connecting seat 42 to move along the axial direction Z. The first connecting seat 42 drives the thread - hooking member 30 to move from the position of hooking the suture thread to the position of releasing the suture thread 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 move along the axial direction Z relative to the first push - pull member 40 for needle - inserting. In this way, the second push - pull member 50 can drive the puncturing member 20 to insert the needle to complete the puncturing 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] See also Figure 2 and Figure 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, and 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, and the third abutting portion 421 extends into the mounting groove 523 and can move in the mounting groove 523 along the axial direction Z, and the first elastic member 81 and the second elastic member 82 are both arranged 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] See also Figure 3 and Figure 7, in one embodiment, the first connection base 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. The first limiting portion 72 is movably disposed in the first travel groove 422 along the axial direction Z. In addition, the second connection base 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. The second limiting portion 73 is movably disposed in the second travel groove 524 along the axial direction Z. Thus, the first limiting portion 72 moves in the first travel groove 422 to limit the movement stroke of the first push-pull member 40 along the axial direction Z, so that the puncturing member 20 moves within a preset stroke range. Specifically, as Figure 3 and Figure 4 shown, when the first push-pull 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 Figure 7 and Figure 8 shown, when the first push-pull member 40 drives the thread-hooking member 30 to move to the position of releasing the suture, 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 travel groove 524 to limit the movement stroke of the second push-pull member 50 along the axial direction Z, so that the thread-hooking member 30 moves within a preset stroke range. Specifically, as Figure 7 and Figure 8 shown, when the second push-pull member 50 drives the puncturing member 20 to insert the needle to the limit position, the second limiting portion 73 abuts against one side wall of the second travel groove 524; as Figure 3 and Figure 4 shown, when the second push-pull member 50 drives the puncturing member 20 to withdraw the needle to the limit position, the second limiting portion 73 abuts against the other side wall of the second travel groove 524.

[0068] In some embodiments, the suturing device further includes a suction member 60 for connecting to a negative pressure source. The suction member 60 can be either disposed outside the outer sleeve 10 or passed through the inside of the outer sleeve 10. The specific installation position and structural form are flexibly adjusted and set according to actual requirements, as long as the negative pressure generated at the suction portion 61 can suck the target tissue 93 into the window 11, so as to perform corresponding suturing actions on the target tissue 93. Among them, when the suction member 60 is passed through the inside of the outer sleeve 10, the suction portion 61 of the suction member 60 is arranged corresponding to the position of the window 11. For example, the distal end of the suction member 60, that is, the suction portion 61, extends to the side of the window 11, so that when the suction member 60 generates negative pressure, the target tissue 93 can be sucked into the window 11. On the contrary, when the suction member 60 is located outside the outer sleeve 10, for example, extending along the outer wall of the outer sleeve 10, the suction portion 61 of the suction member 60 can either extend into the outer sleeve 10 through the window 11 and be arranged corresponding to the position of the window 11; or a through hole is provided on the outer sleeve 10, and the suction portion 61 communicates with the through hole to generate negative pressure at the window 11 to suck the target tissue 93; or the suction portion 61 penetrates through the outer sleeve 10 and extends into the inside of the outer sleeve 10 to generate negative pressure at the window 11 to suck the target tissue 93.

[0069] In this embodiment, in order to minimize the damage to tissues caused by the suction member 60 during the operation, such as collision and friction, the case where the suction member 60 is passed through the inside of the outer sleeve 10 will be specifically described as an example, but it is not limited thereto.

[0070] Please refer to Figures 1 to 4 , in one embodiment, the suction member 60 is passed through the inside of the outer sleeve 10 and through the inside of the housing 70. The suction member 60 includes but is not limited to a suction pipe fitting. In this way, the overall layout can be made compact, the volume size of the device is small, and the damage to tissues is small.

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

[0072] In some embodiments, the suturing device further includes a thread take-up reel. The thread take-up reel is used for unwinding the suture. Specifically, the thread take-up reel is, for example, arranged on the housing 70.

[0073] Please refer to Figures 1 to 4, in some embodiments, the first push rod 41 not only abuts against the inner wall of the outer sleeve 10 and is slidably engaged therewith in the axial direction Z, but also abuts against the outer wall of the suction pipe fitting and is slidably engaged therewith in the axial direction Z. Thus, the running stability of the first push rod 41 is good, the overall structure is compact, and the volume size is small. In addition, the second connecting seat 52 not only abuts against the inner wall of the housing 70 and is slidably engaged therewith in the axial direction Z, but also abuts against the outer wall of the suction pipe fitting and is slidably engaged therewith in the axial direction Z, which can further improve the running stability of the second push-pull member 50. Additionally, the moving seat 53 is, for example, slidably sleeved outside the suction member 60.

[0074] Similar to the arrangement in which the second push-pull member 50 is slidably engaged with the outer sleeve 10, the housing 70, and the suction pipe fitting respectively, the first push-pull member 40 is correspondingly slidably engaged with the outer sleeve 10, the housing 70, and the suction pipe fitting respectively, thereby improving the movement stability of the first push-pull member 40. 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 is slidably engaged therewith in the axial direction Z, but also abuts against the outer wall of the suction pipe fitting and is slidably engaged therewith in the axial direction Z. Thus, the running stability of the second push rod 51 is good, the overall structure is compact, and the volume size is small. In addition, the first connecting seat 42 not only abuts against the inner wall of the housing 70 and is slidably engaged therewith in the axial direction Z, but also abuts against the outer wall of the suction pipe fitting and is slidably engaged therewith in the axial direction Z, which can further improve the running stability of the first push-pull member 40.

[0075] In some embodiments, to improve the running 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 fitting is adapted to the shape of the outer wall of the suction pipe fitting. In this way, the stable running of the second push-pull member 50 in the axial direction Z can be achieved. 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 fitting is adapted to the shape of the outer wall of the suction pipe fitting.

[0076] In the description of the present application, it should be understood that if there appear such terms as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

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

[0078] In this application, unless otherwise clearly specified and defined, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0079] In this application, unless otherwise clearly specified and defined, if there is a description such as a first feature being "on" or "under" a second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath", and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0080] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0081] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0082] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A suturing device, characterized in that, The suture device includes: An outer sleeve, a window for allowing a target tissue to enter is provided on the distal side wall of the outer sleeve, the window communicates with the inner cavity of the outer sleeve, and the inner cavity is also used to communicate with a negative pressure source; and A suture mechanism, which is arranged inside the outer sleeve and is used for suturing the target tissue sucked into the window.

2. The suture device according to claim 1, wherein, The suture mechanism includes: A puncturing member, which is arranged inside the outer sleeve, a threading hole is provided on the puncturing member, and the puncturing member can move axially distally or proximally; and A thread hooking member, which is movably arranged inside the outer sleeve, the movable positions of the thread hooking member include a thread hooking position and a thread releasing position, the thread hooking member is used for moving to the thread hooking position to hook the suture when the puncturing member retracts, and the thread hooking member is also used for moving to the thread releasing position to release the suture when the puncturing member advances.

3. The suture device according to claim 2, wherein, The suture device further includes a first push-pull member, which is movably arranged inside the outer sleeve and is in transmission connection with the thread hooking member, and the first push-pull member can drive the thread hooking member to reciprocate between the thread hooking position and the thread releasing position by reciprocally moving along the axial direction Z of the outer sleeve.

4. The suturing device according to claim 3, wherein The thread hooking member is swingably arranged at the distal end of the outer sleeve, a chute is arranged on the first push-pull member, and the thread hooking member has a sliding portion slidably arranged in the chute, and the first push-pull member can drive the thread hooking member to swing reciprocally between the thread hooking position and the thread releasing position by reciprocally moving along the axial direction of the outer sleeve.

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

6. The suture device according to claim 5, wherein The first push-pull member includes a first push rod 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 slidably matched with the inner wall of the outer sleeve along the axial direction Z.

7. The suturing device according to claim 6, wherein The first push rod is driven by the second push rod, so that the thread hooking member is driven by the puncturing member; or, the second push rod is driven by the first push rod, so that the puncturing member is driven by the thread hooking member.

8. The suture device according to claim 6, wherein The suture device further includes a housing connected to the outer sleeve; The suture mechanism further includes a first elastic member and a second elastic member arranged inside the housing; The first push-pull member further includes a first connecting seat connected to the first push rod, the first connecting 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 includes a second connecting seat connected to the second push rod, the second connecting seat is arranged outside the outer sleeve and is movably arranged inside the housing along the axial direction Z; Wherein, a first abutting portion and a second abutting portion are provided on the second connecting seat and arranged in sequence along the needle insertion direction, a third abutting portion is provided on the first connecting seat and located between the first abutting portion and the second abutting portion, the third abutting portion is respectively in abutting cooperation with the first abutting portion and the second abutting portion and can move back and forth in the interval area between the first abutting portion and the second abutting portion along the axial direction Z, the third abutting portion abuts against the second abutting portion through the first elastic member, and the first abutting portion abuts against the third abutting portion through the second elastic member.

9. The suture device according to claim 8, characterized in that, The suture mechanism further includes a third elastic member disposed inside the housing; the second push-pull member further includes a moving seat connected to the second connecting seat and movably disposed inside the housing along the axial direction Z; the moving seat is used to be connected to a power source, the moving seat is provided with a fourth abutting portion, and an inner wall of the housing is provided with a fifth abutting portion, and the fourth abutting portion abuts against the fifth abutting portion through the third elastic member.

10. The suturing device according to claim 8, wherein, The first connecting seat is provided with a first travel groove extending along the axial direction Z, and an inner wall of the housing is provided with a first limiting portion, and the first limiting portion is movably disposed 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 an inner wall of the housing is provided with a second limiting portion, and the second limiting portion is movably disposed in the second travel groove along the axial direction Z.

11. The suture device according to claim 8, characterized in that, The suturing device further includes a suction member for connecting to the negative pressure source, and the suction member is disposed inside the outer sleeve and passes through the inside of the housing.

12. The suture device according to claim 11, wherein, The first push rod and / or the first connecting seat also slide in cooperation with an outer wall of the suction member along the axial direction Z; the second push rod and / or the second connecting seat slide in cooperation with the outer wall of the suction member along the axial direction Z.

13. The suture device according to any one of claims 2-12, characterized in that, The suturing device further includes a thread take-up wheel for unwinding the suture.

14. The suture device according to claim 1, wherein, The suturing device further includes a suction member connected to the negative pressure source, the suction member is disposed inside the outer sleeve, and a distal end of the suction member extends beside the window.

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