A medical stapler and a suture method using the same

Abstract

The present invention discloses a medical stapler and a suture method using the same. Among them, the stapler includes a suture cavity for the tissue to be sutured to enter the interior from the outside to the inside and perform suture operations inside; the suture method using the same includes inserting the suture cavity into the abdominal puncture hole, and the lower end of the suture cavity passes through the subcutaneous tissue, fascia and peritoneum. The abdominal wall tissue enters the interior of the suture cavity through the through holes on the suture cavity, and the abdominal wall tissue is sutured inside the suture cavity by a suture needle; in the present invention, the medical stapler is inserted into the abdominal puncture hole, and the abdominal wall tissue enters the suture cavity from the outside to the inside through the through holes on the suture cavity, and threading operations are performed on the abdominal wall tissue entering from the outside to the inside from the internal space of the suture cavity to complete the suture, protecting the internal tissues of the abdominal cavity from being damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a medical stapler and a suture method using the same. Background Art

[0002] Laparoscopic surgery is a common minimally invasive surgical method in modern medicine. During laparoscopic surgery, 3 to 5 puncture channels with a diameter of 5 mm to 10 mm penetrating the abdominal wall tissue need to be set first, so that surgical instruments can enter the abdominal cavity or thoracic cavity through these puncture channels to perform corresponding surgeries. After the surgery is completed, after removing the surgical instruments, these puncture channels need to be sutured to facilitate wound healing.

[0003] The existing abdominal wall staplers in the prior art need to use suture needles to guide the suture thread into the abdominal wall tissue to be sutured. For example, the fascia stapler disclosed in the patent with the publication number CN204797923U has an open structure at the opposite end faces of a pair of wings. During the puncture process of the lead needle, the lead needle will protrude from the open structure of the wings. During this process, it is easy for the lead needle to directly pierce the human tissue. If it pierces the internal organs, there is a high probability of a major medical accident. Therefore, aiming at the risks existing in the actual use of the above abdominal wall stapler, designing a structure that can avoid the lead needle piercing the human tissue can effectively avoid the occurrence of the above risks; for another example, in the protective sleeve, wings and minimally invasive fascia abdominal wall stapler disclosed in the patent with the publication number CN 108938024 A, the protective pad plays a role in limiting and protecting the tip of the lead needle, avoiding the occurrence of the phenomenon that the tip of the needle directly pierces the human tissue, and reducing the risk of the human tissue being pierced by the lead needle. Although setting the protective pad can avoid medical accidents to a certain extent, its essence is still suturing the human tissue outside the stapler, still cannot completely avoid risks, and it also has problems of complex structure and inconvenient operation. Summary of the Invention

[0004] The purpose of the present invention is to provide a medical stapler and a suture method using the same that suture the internal part after the human tissue enters the inside from the outside to the inside in view of the defects and deficiencies of the prior art.

[0005] To achieve the above purpose, the present invention provides the following solution: The present invention provides a medical stapler, including a suture cavity for the tissue to be sutured to enter the inside from the outside to the inside and perform suture operations inside.

[0006] Preferably, one end of the suture cavity is open, and a through hole for the abdominal wall tissue to pass through is provided on the side wall.

[0007] Preferably, the suture cavity includes an externally enlarged section and an internally suturing section that are sequentially connected. The opening is provided at the non-connected end of the externally enlarged section. The outer diameter of the externally enlarged section is greater than that of the internally suturing section. The through hole is provided on the side wall of the internally suturing section.

[0008] Preferably, the end face of the non-connected end of the internally suturing section is a closed structure.

[0009] Preferably, the externally enlarged section is trumpet-shaped, and the closed structure is arc-shaped.

[0010] Preferably, the externally enlarged section and the internally suturing section are smoothly transitionally connected.

[0011] Preferably, the non-connected end of the internally suturing section is a straight-head structure, and the straight-head structure is I-shaped.

[0012] Preferably, the through holes are symmetrically arranged on the side walls of opposite sides of the internally suturing section, and a first thread-dropping gap communicating the two through holes is provided on the side wall below the through holes.

[0013] Preferably, reinforcing ribs are provided on the outer wall of the internally suturing section, and the reinforcing ribs span the areas above and below the through holes.

[0014] Preferably, the non-connected end of the internally suturing section is an elbow structure, and the elbow structure is J-shaped.

[0015] Preferably, the through hole is provided on the side wall of one side of the internally suturing section.

[0016] Preferably, the side wall of the internally suturing section where the through hole is provided is an arc-shaped structure, and the diameter of the arc-shaped structure gradually decreases from outside to inside.

[0017] Preferably, the through hole is inclined towards the inside and provided on the side wall of the internally suturing section.

[0018] Preferably, a guiding channel for the suture needle to pass through is provided in the suture cavity, and the suture needle pierces the abdominal wall tissue located in the suture cavity after passing through the guiding channel.

[0019] Preferably, the guiding outlet of the guiding channel or the linear extension trajectory of the guiding outlet is close to the through hole.

[0020] Preferably, a second thread-dropping gap is provided on the guiding channel.

[0021] Preferably, both the suture cavity and the guiding channel are made of medical transparent materials.

[0022] Preferably, the end of the non-connected end of the externally enlarged section is connected to an annular flange.

[0023] The present invention also provides a suture method using the medical stapler described above, including the following steps:

[0024] Insert the suture cavity into the abdominal puncture hole, and the lower end of the suture cavity passes through the subcutaneous tissue, fascia and peritoneum. The abdominal wall tissue enters the inside of the suture cavity through the through holes on the suture cavity, and the abdominal wall tissue is sutured inside the suture cavity by a suture needle.

[0025] The present invention has achieved the following beneficial effects compared with the prior art:

[0026] 1. After abdominal puncture surgery, the medical stapler is inserted into the abdominal puncture hole in the medical stapler provided by the present invention. The abdominal wall tissue enters the suture cavity from outside to inside through the through holes on the suture cavity, and threading operation is performed on the abdominal wall tissue entering from outside to inside from the internal space of the suture cavity to complete the suture, protecting the internal tissues of the abdominal cavity from damage;

[0027] 2. The outer diameter of the external expansion section in the medical stapler provided by the present invention is larger than the outer diameter of the internal suture section, which can not only stabilize the device from moving up and down but also realize the threading operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 It is a schematic structural diagram of a medical stapler with a straight head structure without a guiding channel of the present invention;

[0030] Figure 2 For Figure 1 the top view;

[0031] Figure 3 It is a schematic structural diagram of a medical stapler with a straight head structure with a guiding channel of the present invention;

[0032] Figure 4 It is a schematic structural diagram of a medical stapler with an elbow structure without a guiding channel of the present invention;

[0033] Figure 5 It is a schematic structural diagram of a medical stapler with an elbow structure with a guiding channel of the present invention;

[0034] Figure 6 For Figure 5 the top view;

[0035] Figure 7a andFigure 7b , Figure 7c , Figure 7d , Figure 7e , Figure 7f , Figure 7g , Figure 7h , Figure 7i , Figure 7j is a suture flow chart with a straight head structure having a guiding channel;

[0036] Figure 8 is a suture flow chart with an elbow structure having a guiding channel;

[0037] Figure 9 is a suture flow chart with an elbow structure without a guiding channel (the rotational suture method is the same as that shown in Figure 8 );

[0038] Among them, 1 - external expansion section; 2 - internal suture section; 3 - through hole; 4 - first thread - off gap; 5 - reinforcing rib; 6 - guiding channel; 7 - second thread - off gap; 8 - annular flange. Specific implementation manner

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] The purpose of the present invention is to provide a medical stapler for internally suturing human tissues after entering from the outside to the inside and its suture method, aiming at the defects and deficiencies of the prior art.

[0041] To make the above - mentioned objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0042] The embodiment of the present invention corresponds to as Figures 1-9, the present invention provides a medical stapler, which includes a stitching cavity for the tissue to be sutured to enter from the outside to the inside and perform stitching operations inside. Among them, the medical staff inserts the stapler with the stitching cavity into the puncture hole, and the human tissue around the puncture hole (i.e., the tissue to be sutured) enters the stitching cavity from the outside to the inside. Subsequently, the threading work of the human tissue on the opposite side is completed simultaneously or sequentially inside the stitching cavity. After the stapler is detached from the puncture hole, the threading is adjusted to complete the stitching work of the human tissue on the opposite side. That is, by setting a stitching cavity that can accommodate human tissue and performing threading work inside the stitching cavity, the problem that the suture needle is prone to misoperation and damage the internal tissues of the abdominal cavity during external suturing of the stitching cavity is avoided, protecting the internal tissues of the abdominal cavity from harm. Its working area for threading work is completely different from that in the prior art;

[0043] Further, as an optimized method, one end of the stitching cavity in the present invention is an opening, and a through hole 3 for the abdominal wall tissue to pass through is provided on the side wall. That is, the abdominal wall tissue enters the inside of the stitching cavity through the through hole 3. The number and size of the through hole 3 can be reasonably designed according to the actual situation. Preferably, the through hole 3 is 1 or 2 symmetrically arranged. The suture needle enters the inside of the stitching cavity through the opening and performs threading on the abdominal wall tissue in the stitching cavity. The suture needle can be a common structure in the prior art or can be structurally improved according to needs.

[0044] Further, as an optimized method, in order to make the structure of the stapler more specific, the stitching cavity in the present invention includes an external expansion section 1 and an internal stitching section 2 that are sequentially connected. The opening is provided at the non-connected end of the external expansion section 1. The outer diameter of the external expansion section 1 is greater than the outer diameter of the internal stitching section 2. The through hole 3 is provided on the side wall of the internal stitching section 2; among them, taking abdominal surgery as an example, all or most of the structure of the external expansion section 1 is located outside the abdominal wall and a small part is located in the abdominal wall tissue, and all or most of the structure of the internal stitching section 2 is located in the abdominal wall tissue and a small part is inside the abdominal cavity. The suture needle passes through the opening and sequentially passes through the external expansion section 1 and the internal stitching section 2 to perform threading work on the abdominal wall tissue located inside the internal stitching section 2.

[0045] Further, as an optimized method, in order to avoid the suture needle damaging organs or other human tissues in the body, the end face of the non-connected end of the internal stitching section 2 in the present invention is a closed structure, that is, the movement range and penetration length of the suture needle are restricted by the closed structure, avoiding the problem that the puncture needle will protrude from the stitching cavity due to excessive operation.

[0046] Furthermore, as an optimization method, in the present invention, the external expansion section 1 is in a trumpet shape, preferably a trumpet-shaped structure that opens outward, so that the external expansion section 1 will not follow the internal suture section 2 into the human body. At the same time, during the use of the stapler, the outer wall of the external expansion section 1 can be attached to the outside of the abdominal wall, making it easier to form a preliminary extrusion on the abdominal wall tissue, facilitating the entry of the abdominal wall tissue into the internal suture section 2, and also being convenient for hand-held operation and rotational operation; the closed structure is in an arc shape, making it smoother for the internal suture section 2 to enter the abdominal cavity, and at the same time avoiding the problem of abdominal wall injury caused by the presence of sharp structures in the structure.

[0047] Furthermore, as an optimization method, in the present invention, the external expansion section 1 and the internal suture section 2 are smoothly transitionally connected. At this time, preferably, the external expansion section 1 and the internal suture section 2 are integrally formed structures, enabling the stapler to enter the puncture hole more smoothly and without damaging the abdominal wall.

[0048] Furthermore, as an optimization method, in the present invention, the non-connected end of the internal suture section 2 is a straight-head structure, and the straight-head structure is in an I shape, that is, a straight cylinder structure. Among them, the connection end of the internal suture section 2 and the external expansion section 1 is an arc structure or the internal suture section 2 is all straight cylinder structures. Of course, the arc structure is preferred, which is conducive to achieving a smooth transitional connection. The number of through holes 3 in the straight-head structure can be 1 or 2. Of course, in the present invention, the number and size of all through holes 3 are mainly based on the fact that the human puncture hole will not be too large. When used for suturing other large-volume biological tissues, the number and size of the through holes 3 can be increased or enlarged accordingly;

[0049] Further, as an optimized way, when the straight head structure is applied to suture human tissues, the number of through holes 3 is preferably 2. In the present invention, the through holes 3 are symmetrically arranged on the side walls of the opposite sides of the in-vivo suture section 2, and a first thread-detaching gap 4 communicating the two through holes 3 is arranged on the lower side wall of the through hole 3. At this time, the suture process can be as follows: insert the in-vivo suture section 2 into the abdominal puncture hole, and the lower end of the in-vivo suture section 2 passes through the subcutaneous tissue, fascia and peritoneum. By squeezing the abdominal wall or pressing the stapler, the abdominal wall tissue enters the inside of the in-vivo suture section 2 through the through holes 3 on both sides of the in-vivo suture section 2. Then, pass the suture through one side of the abdominal wall tissue with a suture needle, place the suture in the abdominal wall tissue, pull out the suture needle, then pass the suture needle through the other side of the abdominal wall tissue, clamp the suture, and pull out the suture on the other side of the abdominal wall tissue, keeping the suture in a relaxed state. Then rotate the stapler to make the abdominal wall tissue located inside the in-vivo suture section 2 protrude. At the same time, during the process of pulling out the stapler, the suture between the two sides of the abdominal wall tissue is detached through the first thread-detaching gap 4. After the stapler is pulled out, tighten the suture to complete the suture work of the two sides of the abdominal wall tissue. Further, the gap value of the first thread-detaching gap 4 being greater than the single or double diameter of the suture is sufficient, and the gap value is preferably less than the diameter of the suture needle to avoid the problem that the suture needle can pass through the first thread-detaching gap 4.

[0050] Further, as an optimized way, since the first thread-detaching gap 4 is opened, the structural strength and structural stability are reduced. Therefore, reinforcing ribs 5 are arranged on the outer wall of the in-vivo suture section 2 in the present invention. The reinforcing ribs 5 straddle the upper and lower regions of the through hole 3, so as to increase the connection strength between the outer wall below the through hole 3 and the outer wall above the through hole 3.

[0051] Further, as an optimized way, the non-connection end of the in-vivo suture section 2 in the present invention can also be an elbow structure, and the elbow structure is in a J shape. Among them, the connection end of the in-vivo suture section 2 and the in-vitro expansion section 1 is an arc structure, which is beneficial to realizing a smooth transition connection. The structure between the connection end and the non-connection end of the in-vivo suture section 2 is preferably a straight tube structure, and of course, it can also be an arc structure with a small curvature, which is beneficial to the abdominal wall tissue entering the in-vivo suture section 2 through the through hole 3. The number of through holes 3 in the elbow structure can be 1 or 2. Of course, the number and size of all the through holes 3 in the present invention are mainly based on the fact that the human puncture hole will not be too large. When used for suturing other large-volume biological tissues, the number and size of the through holes 3 can be increased or enlarged accordingly.

[0052] Further, as an optimized method, when the elbow structure is applied to suture human tissues, the number of through holes 3 is preferably 1, that is, a through hole 3 is provided on the side wall of one side of the in-vivo suture section 2 in the present invention. At this time, the suture process can be as follows: Insert the in-vivo suture section 2 into the abdominal puncture hole, and the lower end of the in-vivo suture section 2 passes through the subcutaneous tissue, fascia and peritoneum. By squeezing the abdominal wall or pressing the stapler, the abdominal wall tissue on one side enters the inside of the in-vivo suture section 2 through the through hole 3 on one side of the in-vivo suture section 2. Subsequently, pass the suture through the abdominal wall tissue on one side with a suture needle, place the suture in the abdominal wall tissue, pull out the suture needle, and keep the suture in a relaxed state. Then rotate the stapler to make the abdominal wall tissue located inside the in-vivo suture section 2 protrude, rotate the through hole 3 to the other side, and make the abdominal wall tissue on the other side enter the inside of the in-vivo suture section 2 through the through hole 3. Then pass the suture through the abdominal wall tissue on the other side with a suture needle. Then rotate the stapler again to make the abdominal wall tissue located inside the in-vivo suture section 2 protrude again, and gradually pull out the stapler. During the process of pulling out the stapler, the suture between the two sides of the abdominal wall tissue detaches through the through hole 3. When the stapler is pulled out, tighten the suture to complete the suture work of the two sides of the abdominal wall tissue.

[0053] The straight head structure and the elbow structure can be interchangeably used in terms of their usage, except that the operation methods are slightly different. In the case of the same diameter, the elbow structure can allow more abdominal wall tissue to enter the product interior than the straight head structure. After threading the suture through the part to be sutured on one side, rotate to thread the suture through the part to be sutured on the other side, and finally complete the suture. The elbow structure has one more method than the straight head structure. Place the suture through the middle channel of the product to the position to be sutured, then puncture the part to be sutured with a puncture needle to lead out the suture, and then after rotation, similarly puncture and lead out the suture through the puncture needle for the part to be sutured on the other side.

[0054] In the straight head structure, the elbow structure and other deformed structures, in order to facilitate the entry of the abdominal wall tissue into the in-vivo suture section 2, the side wall of the in-vivo suture section 2 provided with the through hole 3 in the present invention is an arc structure, and the diameter of the arc structure gradually decreases from outside the body to inside the body, that is, the upper end of the through hole 3 is closer to the abdominal wall tissue than the lower end, increasing the coverage area of the through hole 3, enabling more abdominal wall tissue to enter from outside to inside, which is beneficial to the suture work. Further, as an optimized method, the through hole 3 in the present invention is inclined towards the inside of the body and arranged on the side wall of the in-vivo suture section 2, which is beneficial to the abdominal wall tissue entering the inside of the in-vivo suture section 2.

[0055] To facilitate accurate puncture of the abdominal wall tissue by medical staff operators, that is, to facilitate the suturing work of the suture needle, a guiding channel 6 through which the suture needle can pass is provided in the suture cavity of the present invention. After passing through the guiding channel 6, the suture needle pierces the abdominal wall tissue located in the suture cavity. Among them, the guiding channel 6 can be an integrally formed structure with the suture cavity, or can be prefabricated and then installed on the suture cavity. The number of guiding channels 6 is the same as the number of through holes 3 and is located above the through holes 3. The outlet direction of the guiding channel 6 faces the side wall on the opposite side of the internal suture section 2 in the body corresponding to this guiding channel 6, that is, to avoid the problem that the tip of the sewing needle directly pierces the side wall of the stapler, resulting in damage to the outer wall of the stapler. Especially when the material hardness of the stapler is not enough, the suture needle is likely to pierce the outer wall, and at this time, the stapler for internal suture will not be able to achieve a good protective effect; further, as an optimized method, in the present invention, the guiding outlet of the guiding channel 6 or the straight-line extension trajectory of the guiding outlet is close to the through hole 3, which is beneficial for the suture needle to pierce the abdominal wall tissue with sufficient thickness.

[0056] Further, as an optimized method, to facilitate thread removal, a second thread removal gap 7 is provided on the guiding channel 6 of the present invention; the first thread removal gap 4 has already been provided in the straight-head structure, and at this time, the second thread removal gap 7 may not be provided in the straight-head structure; while the first thread removal gap 4 is not provided in the elbow structure. To facilitate the thread removal work in the elbow structure, preferably, the second thread removal gap 7 is provided on the guiding channel 6 of the elbow structure; use a puncture needle to pass the thread through the guiding channel to pierce the suture cavity, and at this time, the thread is separated from the gap. After rotating the stapler, use the puncture needle to pierce the abdominal wall tissue, lead the thread through the guiding channel to an appropriate length, and then remove the thread from the gap.

[0057] Further, as an optimized method, both the suture cavity and the guiding channel 6 in the present invention are made of medical transparent materials.

[0058] Further, as an optimized method, to facilitate hand-held operation, the end of the non-connected end of the external expansion section 1 in the present invention is connected to the annular flange 8.

[0059] Specific examples are used in the present invention to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A medical stapler, characterized in that: It includes a suture cavity for the tissue to be sutured to enter from the outside to the inside and perform suture operations inside. One end of the suture cavity is an opening, and a through hole for abdominal wall tissue to pass through is provided on the side wall. The suture cavity includes an externally enlarged section and an internally suturing section that are sequentially connected. The opening is provided at the non-connected end of the externally enlarged section. The outer diameter of the externally enlarged section is larger than the outer diameter of the internally suturing section. The through hole is provided on the side wall of the internally suturing section. A guiding channel for the suture needle to pass through is provided in the suture cavity. After passing through the guiding channel, the suture needle pierces the abdominal wall tissue located in the suture cavity. The guiding outlet of the guiding channel or the straight extension trajectory of the guiding outlet is close to the through hole.

2. The medical stapler according to claim 1, characterized in that: The end face of the non-connected end of the internally suturing section is a closed structure.

3. The medical stapler according to claim 2, characterized in that: The externally enlarged section is trumpet-shaped, and the closed structure is arc-shaped.

4. The medical stapler according to claim 3, characterized in that: The externally enlarged section and the internally suturing section are smoothly transitionally connected.

5. The medical stapler according to claim 1, characterized in that: The non-connected end of the internally suturing section is a straight-head structure, and the straight-head structure is I-shaped.

6. The medical stapler according to claim 5, characterized in that: The through holes are symmetrically provided on the side walls of the opposite sides of the internally suturing section, and a first thread-detaching gap for connecting the two through holes is provided on the side wall below the through holes.

7. The medical stapler according to claim 6, characterized in that: Reinforcing ribs are provided on the outer wall of the internally suturing section, and the reinforcing ribs span the areas above and below the through holes.

8. The medical stapler according to claim 1, characterized in that: The non-connected end of the internally suturing section is an elbow structure, and the elbow structure is J-shaped.

9. The medical stapler according to claim 8, characterized in that: The through hole is provided on the side wall of one side of the internally suturing section.

10. The medical stapler according to claim 7 or 9, characterized in that: The side wall of the internally suturing section where the through hole is provided is an arc-shaped structure, and the diameter of the arc-shaped structure gradually decreases from the outside to the inside.

11. The medical stapler according to claim 10, characterized in that: The through hole is inclined towards the inside and provided on the side wall of the internally suturing section.

12. The medical stapler according to claim 7 or 9, characterized in that: A second thread-detaching gap is provided on the guiding channel.

13. The medical stapler according to claim 12, characterized in that: Both the suture cavity and the guiding channel are made of medical transparent materials.

Images