A fascia suture device and its installation method

Abstract

The present invention discloses a fascia suture device, including a support assembly, wherein a puncture cavity, a locking cavity located below the puncture cavity, and a loosening cavity intersecting the locking cavity at the bottom end are respectively provided in the support assembly; a puncture needle assembly placed in the puncture cavity, wherein one end of a guide shaft is placed in the puncture needle assembly; a locking assembly placed in the locking cavity, wherein the other end of the guide shaft is placed in the locking assembly, wherein the locking assembly is used to lock the other end of the guide shaft in the locking assembly; and a loosening assembly placed in the loosening cavity, wherein one end of the loosening assembly is mounted on the locking assembly, wherein the loosening assembly is used to control the locking assembly to loosen and tighten the guide shaft. The device is used to gather tissues and perform percutaneous sutures in laparoscopic surgery to close surgical incisions.

Description

Technical Field

[0001] The present invention belongs to the field of medical technology, and particularly relates to a circumferential fascia stapler and an installation method thereof. Background Art

[0002] Laparoscopic surgery is a newly developed minimally invasive surgical method, which has the advantages of small incision, fast recovery and little pain compared with traditional surgery. It is an inevitable trend in the development of future surgical methods, and currently more and more patients accept the treatment of this surgery.

[0003] Chinese Patent Publication No. CN204797920U discloses a fascia stapler, including a locator and a lead needle; the locator includes: a locator main body, a pair of wings arranged at the distal end of the locator body, and a linkage member detachably connected to the wings; the linkage member includes: a pull ring arranged at the proximal end of the locator body, a connecting pull rod penetrating through the locator body and used for connecting the pull ring and the wings; wherein, the pull ring moves back and forth along the axis direction of the locator main body, and controls the opening or closing of the wings by driving the connecting pull rod; the fascia stapler further includes a locking member, and the locking member is arranged between the linkage member and the locator body for restricting the relative movement of the linkage member relative to the locator body towards the proximal or distal end of the fascia stapler. The present invention effectively increases the stability and reliability of the fascia stapler by adding a locking member to restrict the relative position of the linkage member relative to the locator body during the use of the fascia stapler, and further controls the opening or closing of the wings.

[0004] However, in the stapler disclosed in the prior art, the needle freely penetrates into the abdominal cavity, and the needle is exposed in the abdominal cavity, which is extremely easy to cause unnecessary damage to the organs in the abdominal cavity. Moreover, the overall design of the stapler in the prior art is not conducive to wound recovery, that is, retracting the skin and subcutaneous tissue. Summary of the Invention

[0005] In view of the above problems in the prior art, the purpose of the present invention is to provide a circumferential fascia stapler and an installation method thereof.

[0006] The present invention provides the following technical solutions:

[0007] A fascia suture device around, comprising a support assembly and a puncture needle assembly. A puncture cavity, a locking cavity located below the puncture cavity, and a loosening cavity whose bottom intersects with the locking cavity are respectively provided inside the support assembly. The locking cavity and the puncture cavity are on the same axis on one side inside the support assembly, and the loosening cavity is on the other side inside the support assembly. The puncture needle assembly is placed inside the puncture cavity, and one end of the guiding shaft is placed inside the puncture needle assembly. The locking assembly is placed inside the locking cavity, and the other end of the guiding shaft is placed inside the locking assembly for locking the other end of the guiding shaft inside the locking assembly. The loosening assembly is placed inside the loosening cavity, and one end of the loosening assembly is installed on the locking assembly for controlling the locking assembly to loosen and tighten the guiding shaft. The suture thread is wound around the guiding shaft.

[0008] Specifically, the locking assembly includes a circlip tube, a locking block sleeved outside the circlip tube. A compression spring is built inside the locking block. One end of the compression spring is placed at the bottom of the locking cavity. The circlip tube is installed inside the support upper cover. One end of the circlip tube is provided with a first tension member, and the first tension member cooperates with the movement of the locking block for locking and loosening the guiding shaft.

[0009] Specifically, the loosening assembly controls the locking and loosening of the guiding shaft by controlling the up and down movement of the locking block.

[0010] Specifically, the loosening assembly includes a connecting piece. One end of the connecting piece is installed on the locking block, and the other end of the connecting piece is installed on the connecting tube. A spring cavity is provided on the loosening cavity. A compression spring is placed inside the spring cavity. The compression spring is sleeved outside the connecting tube. Protrusion parts are arranged on the connecting tube for compressing the compression spring.

[0011] Specifically, the puncture needle assembly includes a handle. A protruding column is provided on the handle. The handle upper cover is installed on the handle. One end of the puncture needle inner core is installed inside the handle upper cover. The other end of the puncture needle inner core is provided with a second tension member. The puncture needle inner core is sleeved with a puncture needle tube. The puncture needle tube is installed inside a guiding block. The guiding block is placed inside a cavity provided on the handle and installed on the handle. A return spring is placed inside the cavity, and the return spring is placed on the guiding block.

[0012] Specifically, the handle upper cover is installed on the handle through cooperation of a second protrusion and a second through hole. One end of the puncture needle inner core is placed inside the handle upper cover and has an interference fit with the handle. The puncture needle tube passes through the guiding block and has an interference fit with the guiding block. The guiding block is placed inside a cavity provided on the handle and the guiding block is installed on the handle through cooperation of a third protrusion and a third through hole.

[0013] Specifically, the first tension member is a pressing flap, and the second tension member is a tension flap. There is a protruding platform outside the end of the pressing flap. The tension flap is an arc-shaped flap, and there are gaps between the pressing flaps and between the tension flaps. The inner diameters of the first tension member and the second tension member are both smaller than the diameter of the guiding shaft.

[0014] Specifically, the guiding shaft is provided with a convex platform, and there is an annular groove on the guiding shaft that matches the arc of the tension flap. The two ends of the guiding shaft are set as arc tips.

[0015] Specifically, the outer shape of the support assembly is gun-shaped, and the contour lines of the support assembly are all arc-shaped. The part placed inside the abdominal cavity is a quarter ellipse, and there is a notch at the tip.

[0016] Based on the above device, the present invention also proposes an installation method for the surrounding fascia suture device, including the following steps:

[0017] S1. Manually install the two ends of the connecting piece on the locking block and the connecting pipe respectively. At the same time, place the compression spring inside the locking block, and sleeve the compression spring on the snap ring tube. Pass the compression spring through the connecting pipe.

[0018] S2. Place the above-mentioned connected components on the locking cavity and the loosening cavity respectively.

[0019] S3. Install the inner core of the puncture needle on the handle upper cover, install the handle upper cover on the handle, place the return spring in the cavity provided in the handle, then install the puncture needle tube on the guiding block, pass the inner core of the puncture needle through the puncture needle tube, and finally install the guiding block inside the handle.

[0020] S4. Place the guiding shaft inside the tension flap of the inner core of the puncture needle.

[0021] The beneficial effects of the present invention are:

[0022] 1. The outer shape of the support assembly designed in this device is gun-shaped, and the contour lines of the support assembly are all arc-shaped. The part placed inside the abdominal cavity is a quarter ellipse, thus avoiding additional damage to the abdominal cavity, and there is a notch at the tip, which can better retract the skin and subcutaneous tissue;

[0023] 2. Compared with other closing devices that require the needle to freely penetrate into the abdominal cavity, the puncture needle assembly of this device is always inside the device and protected, thus eliminating the risk of damaging abdominal organs;

[0024] 3. This device is a relatively simple equipment that can automatically capture the suture thread. Compared with the proficiency required for other fascia suture devices to operate, this device can be operated on the abdominal wound even by novices. Description of the Drawings

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 is a front view of the present invention;

[0027] Figure 2 is an exploded view of the present invention;

[0028] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0029] Figure 4 It is a schematic diagram of the positional relationship between the connecting piece and the locking block in the present invention;

[0030] Figure 5 is a schematic diagram of a first working state of the present invention;

[0031] Figure 6 is a schematic diagram of a second working state of the present invention;

[0032] Figure 7 is an exploded view of the puncture needle assembly of the present invention;

[0033] Figure 8 It is a schematic structural diagram of the guide shaft, the first tension component and the second tension component in the present invention. DETAILED DESCRIPTION

[0034] Embodiment 1

[0035] like Figures 1 to 2 As shown, the present invention provides a fascia suturing device, including a support component 17, wherein the support component 17 is respectively provided with a puncture cavity, a locking cavity located below the puncture cavity, and a loosening cavity whose bottom end intersects with the locking cavity, wherein the locking cavity and the puncture cavity are located on the same axis on one side of the support component 17, and the loosening cavity is located on the other side of the support component 17.

[0036] A puncture needle assembly 16 is placed in the puncture cavity, and one end of the guide shaft 7 is placed in the puncture needle assembly 16; a locking assembly 19 is placed in the locking cavity, and the other end of the guide shaft 7 is placed in the locking assembly 19, and the locking assembly 19 is used to lock the other end of the guide shaft 7 in the locking assembly 19; a loosening assembly 22 is placed in the loosening cavity, and one end of the loosening assembly 22 is installed on the locking assembly 19, and the loosening assembly 22 is used to control the locking assembly 19 to loosen and tighten the guide shaft 7. This device is used to gather tissues and perform percutaneous sutures in laparoscopic surgery to close surgical incisions.

[0037] The suture 18 is wound around the guide shaft 7; the guide shaft 7 is first placed in the puncture needle assembly 16, and through the introduction of the puncture needle assembly 16, the guide shaft 7 passes through the abdominal cavity and is placed in the support assembly 17. At the same time, the puncture needle assembly 16 drives the loosening assembly 22 to control the opening of the locking assembly 19, and the guide shaft 7 is placed in the locking assembly 19, and then the puncture needle assembly 16 drives the loosening assembly 22 to control the closing of the locking assembly 19, so that the locking assembly 19 holds the guide shaft 7, and finally the puncture needle assembly 16 is taken out, so that the guide shaft 7 and the suture 18 remain in the locking assembly 19.

[0038] Please focus on Figure 2 The support assembly 17 includes a support upper cover 14 and a support lower cover 15. The support upper cover 14 is provided with a first protrusion, and the support lower cover 15 is provided with a groove corresponding to the first protrusion. The support lower cover 15 is installed on the support upper cover 14 through the first protrusion matching the groove.

[0039] The support component 17 is gun-shaped, and the contour lines of the support component 17 are all arc-shaped, and the part placed inside the abdominal cavity is a quarter ellipse, so as to avoid causing additional damage to the abdominal cavity, and a notch is provided at the tip of the support component 17 to better retract the skin and subcutaneous tissue.

[0040] Please focus on Figure 2 and Figure 3 The locking assembly 19 includes a retaining spring tube 8 and a locking block 9 which is sleeved on the outside of the retaining spring tube 8. The locking block 9 has a built-in compression spring 10. One end of the compression spring 10 is placed at the bottom of the locking cavity. The retaining spring tube 8 is installed in the supporting upper cover 14 through a hole provided at one end of the retaining spring tube 8 and a first protrusion provided on the supporting upper cover 14. The cooperation between the hole and the first protrusion is used to limit the up and down movement of the retaining spring tube 8. A first tension component is provided at one end of the retaining spring tube 8. The first tension component cooperates with the movement of the locking block 9 to lock and release the guide shaft 7.

[0041] The first tension component is made of plastic and has tension. Under normal conditions, the first tension component cooperates with the locking block 9 to make the first tension component in a closed state. When the locking block 9 moves downward, the first tension component is in an open state. Therefore, the movement of the first tension component and the locking block 9 can control the locking and releasing of the guide shaft 7.

[0042] The loosening assembly 22 controls the locking block 9 to move up and down, thereby controlling the locking assembly 19 to loosen and tighten the guide shaft 7.

[0043] Please focus on Figure 2The loosening component 22 includes a connecting piece 13, one end of which is installed on the locking block 9, and the other end of the connecting piece 13 is installed on the connecting tube 12 through a protrusion provided thereon to cooperate with a first through hole provided thereon, and the installation methods at both ends of the connecting piece 13 are the same; a spring cavity is provided on the loosening cavity, and the spring cavity is used to place a compression spring 11, and the compression spring 11 is sleeved on the outside of the connecting tube 12, and a protrusion is provided on the connecting tube 12 to compress the compression spring 11.

[0044] Press the connecting tube 12, the connecting tube 12 compresses the compression spring 11, thereby smoothly driving the connecting piece 13 to move downward, driving the locking block 9 to move downward, please refer to Figure 4 , thereby controlling the locking assembly 19 to release the guide shaft 7; when the connecting pipe 12 is released, the locking block 9 returns to its original state, thereby controlling the locking assembly 19 to lock the guide shaft 7.

[0045] The puncture needle assembly 16 contains an inner core, and one end of the inner core is provided with a second tension component that can clamp the guide shaft 7. The clamping force of the second tension component is smaller than the clamping force of the first tension component and the locking block 9. The puncture needle assembly 16 is provided with a protruding column for pressing the loosening component 22, thereby controlling the locking component 19 to loosen and tighten the guide shaft 7.

[0046] The working principle of the first embodiment of the present invention is as follows:

[0047] Please focus on Figure 5 , first insert the support assembly 17 from the suture opening;

[0048] Wind the suture 18 around the guide shaft 7, and then place one end of the guide shaft 7 in the second tension member of the inner core of the puncture needle assembly 16, so as to clamp the guide shaft 7 on the puncture needle assembly 16;

[0049] The puncture needle assembly 16 drives the suture thread 18 to pass through the channel of the support assembly 17 to perform a point puncture. When the puncture needle assembly 16 is pressed down, the protruding column provided on the puncture needle assembly 16 is just above the connecting tube 12, thereby driving the connecting tube 12 to compress the compression spring 11, and then driving the locking block 9 to move downward, so that the first tension component is in an open state, and the guide shaft 7 is inserted into the spring tube 8;

[0050] The puncture needle assembly 16 is rotated so that the protruding column provided on the puncture needle assembly 16 leaves the connecting tube 12, so that the connecting piece 13 is restored to its original state, and the connecting piece 13 simultaneously drives the locking block 9 connected thereto, and at this time the locking block 9 holds the retaining spring tube 8 tightly, so that the first tension member is in a locked state, and the guide shaft 7 is locked in the retaining spring tube 8;

[0051] Since the clamping force of the second tension member is less than the clamping force of the first tension member cooperating with the locking block 9, when the puncture needle assembly 16 is pulled out, the guide shaft 7 remains inside the support assembly 17;

[0052] Please refer to Figure 6 , rotate the entire support assembly 17, and the puncture needle assembly 16 punctures another point through the channel of the support assembly 17. When the puncture needle assembly 16 is pressed down, the guide shaft 7 is inserted into the inner core of the puncture needle assembly 16, and at the same time drives the connecting tube 12 to compress the compression spring 11, and then drives the locking block 9 to move downward, so that the first tension member is in an open state. At this time, the puncture needle assembly 16 is taken out so that the puncture needle assembly 16 leaves the abdominal cavity with the guide shaft 7 and the suture 18;

[0053] Finally, the support assembly 17 is taken out, the suture is knotted, and the operation is completed.

[0054] Compared with other closing devices that require the needle to freely puncture into the abdominal cavity, the puncture needle assembly 16 of this device is always inside the device and is protected, thus eliminating the risk of damaging abdominal organs; and this device is a relatively simple device that can automatically capture the suture. Compared with the proficiency required for operating other fascia suturing devices, this device can be operated on the abdominal wound even by a novice.

[0055] Embodiment 2

[0056] As Figure 7 shown, for a fascia suturing device in Embodiment 2, except that the structure of the puncture needle assembly 16 is different from that in Embodiment 1, the structures, installation positions and working principles of other devices are the same.

[0057] The puncture needle assembly 16 includes a handle 1, a protruding column is provided on the handle 1, and the handle upper cover 2 is installed on the handle 1 through a second protrusion cooperating with a second through hole. One end of the puncture needle inner core 3 is placed inside the handle upper cover 2 and is in interference fit with the handle 1. The other end of the puncture needle inner core 3 is provided with a second tension member. The puncture needle inner core 3 is sleeved with a puncture needle tube 6. The puncture needle tube 6 passes through the guide block 5 and the puncture needle tube 6 is in interference fit with the guide block 5. The guide block 5 is placed in a cavity provided in the handle 1 and the guide block 5 is installed on the handle 1 through a third protrusion cooperating with a third through hole. A return spring 4 is arranged in the cavity, and the return spring 4 is placed on the guide block 5.

[0058] The puncture needle assembly 16 provided in this Embodiment 2 ensures the stability of the force applied when the puncture needle tube 6 passes through the abdominal cavity and avoids causing other injuries to the abdominal cavity.

[0059] Embodiment 3

[0060] A fascia suture device according to Embodiment 3, except that the structures of the guide shaft 7, the first tension member, and the second tension member are different from those in Embodiment 1, the structures, installation positions, and working principles of other devices are the same.

[0061] As Figure 8 shown, the first tension member is the pressing flap 21, and the second tension member is the tension flap 20. A protrusion platform is provided outside the end of the pressing flap 21 for restricting the movement of the locking block 9. The tension flap 20 is an arc-shaped flap, and gaps are provided between the pressing flaps 21 and between the tension flaps 20, so it has tension. And the inner diameters of the first tension member and the second tension member are both smaller than the diameter of the guide shaft 7. Therefore, both the first tension member and the second tension member have a clamping force on the guide shaft 7.

[0062] The guide shaft 7 is provided with a convex platform for restricting the movement of the suture 18, and an annular groove is provided on the guide shaft 7 for cooperating with the arc of the tension flap 20. The two ends of the guide shaft 7 are provided as arc tips for facilitating insertion into the first tension member and the second tension member.

[0063] Based on the above device, Embodiment 3 of the present invention also proposes an installation method for using the above-mentioned fascia suture device, including the following steps:

[0064] Step 1, manually install the two ends of the connecting piece 13 on the locking block 9 and the connecting pipe 12 respectively. At the same time, place the compression spring 10 in the locking block 9, and sleeve the compression spring 10 on the snap ring tube 8, and pass the compression spring 11 through the connecting pipe 12;

[0065] Step 2, place the above-mentioned connected components on the locking cavity and the release cavity respectively;

[0066] Step 3, install the inner core 3 of the puncture needle on the upper cover 2 of the handle, install the upper cover 2 of the handle on the handle 1, place the return spring 4 in the cavity provided in the handle 1, then install the puncture needle tube 6 on the guide block 5, pass the inner core 3 of the puncture needle through the puncture needle tube 6, and finally install the guide block 5 in the handle 1;

[0067] Step 4, place the guide shaft 7 in the tension flap 20 of the inner core 3 of the puncture needle.

[0068] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A circumferential fascia suture device, comprising a support assembly (17) and a puncture needle assembly (16), characterized in that, it further comprises a puncture cavity, a locking cavity located below the puncture cavity, and a loosening cavity whose bottom end intersects with the locking cavity are respectively provided in the support assembly (17), the locking cavity and the puncture cavity are on the same axis on one side inside the support assembly (17), and the loosening cavity is on the other side inside the support assembly (17); a guiding shaft (7), a puncture needle assembly (16) placed in the puncture cavity, one end of the guiding shaft (7) is placed inside the puncture needle assembly (16), and the puncture needle assembly (16) includes a handle (1); a locking assembly (19), the locking assembly (19) placed in the locking cavity, and the other end of the guiding shaft (7) is placed inside the locking assembly (19) for locking the other end of the guiding shaft (7) inside the locking assembly (19), and the locking assembly (19) includes a circlip tube (8); a loosening assembly (22), the loosening assembly (22) placed in the loosening cavity, and one end of the loosening assembly (22) is installed on the locking assembly (19) for controlling the locking assembly (19) to loosen and tighten the guiding shaft (7); a suture (18), wound around the guiding shaft (7).

2. The circumferential fascia suture device according to claim 1, characterized in that, the locking assembly (19) further includes a locking block (9) sleeved outside the circlip tube (8), a compression spring (10) is built in the locking block (9), one end of the compression spring (10) is placed at the bottom of the locking cavity, the circlip tube (8) is installed in the support upper cover (14), and a first tension member is provided at one end of the circlip tube (8), and the first tension member cooperates with the movement of the locking block (9) for locking and loosening the guiding shaft (7).

3. The circumferential fascia suture device according to claim 2, characterized in that, the loosening assembly (22) controls the locking assembly (19) to loosen and tighten the guiding shaft (7) by controlling the up and down movement of the locking block (9).

4. The circumferential fascia suture device according to claim 3, characterized in that, the loosening assembly (22) includes a connecting piece (13), one end of the connecting piece (13) is installed on the locking block (9), and the other end of the connecting piece (13) is installed on a connecting tube (12); a spring cavity is provided on the loosening cavity, a compression spring (11) is placed in the spring cavity, the compression spring (11) is sleeved outside the connecting tube (12), and a protrusion is provided on the connecting tube (12) for compressing the compression spring (11).

5. The circumferential fascia suture device according to claim 1, characterized in that, The handle (1) is provided with a protruding column. The handle upper cover (2) is installed on the handle (1). One end of the puncture needle inner core (3) is installed in the handle upper cover (2). The other end of the puncture needle inner core (3) is provided with a second tension member. The puncture needle inner core (3) is sleeved with a puncture needle tube (6). The puncture needle tube (6) is installed in the guide block (5). The guide block (5) is placed in the cavity provided in the handle (1) and is installed on the handle (1). The cavity is provided with a return spring (4), and the return spring (4) is placed on the guide block (5).

6. A circumferential fascia suture device according to claim 5, wherein, the handle upper cover (2) is installed on the handle (1) through the cooperation of a second protrusion and a second through hole. One end of the puncture needle inner core (3) is placed in the handle upper cover (2) and is in interference fit with the handle (1). The puncture needle tube (6) passes through the guide block (5) and the puncture needle tube (6) is in interference fit with the guide block (5). The guide block (5) is placed in the cavity provided in the handle (1) and the guide block (5) is installed on the handle (1) through the cooperation of a third protrusion and a third through hole.

7. A circumferential fascia suture device according to claim 5, wherein, the first tension member is a pressing flap (21), the second tension member is a tension flap (20). There is a protruding platform outside the end of the pressing flap (21). The tension flap (20) is an arc-shaped flap. There are gaps between the pressing flaps (21) and between the tension flaps (20). The inner diameters of the first tension member and the second tension member are both smaller than the diameter of the guide shaft (7).

8. A circumferential fascia suture device according to claim 7, wherein, the guide shaft (7) is provided with a convex platform, and the guide shaft (7) is provided with an annular groove that matches the arc of the tension flap (20). The two ends of the guide shaft (7) are set as arc tips.

9. A circumferential fascia suture device according to any one of claims 1-8, wherein, the support assembly (17) is in the shape of a gun, and the contour lines of the support assembly (17) are all arc-shaped. The part placed inside the abdominal cavity is a quarter ellipse, and there is a notch at the tip of the support assembly (17).

10. An installation method of a circumferential fascia suture device according to claim 9, wherein, it includes the following steps: S1, manually install the two ends of the connecting piece (13) on the locking block (9) and the connecting pipe (12) respectively. At the same time, place the compression spring (10) inside the locking block (9), and sleeve the compression spring (10) on the snap ring tube (8). Pass the compression spring (11) through the connecting pipe (12); S2, place the snap ring tube (8), the locking block (9), and the compression spring (10) in the locking cavity, and place the compression spring (11), the connecting pipe (12), and the connecting piece (13) in the loosening cavity; S3. Install the inner core (3) of the puncture needle on the upper cover (2) of the handle, install the upper cover (2) of the handle on the handle (1), place the return spring (4) in the cavity provided in the handle (1), then install the puncture needle tube (6) on the guide block (5), pass the inner core (3) of the puncture needle through the puncture needle tube (6), and finally install the guide block (5) in the handle (1); S4. Place the guide shaft (7) in the tension flap (20) of the inner core (3) of the puncture needle.

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