Sutureless purse-string device for the intestine

Abstract

The application provides an intestinal tube purse-string embedding device, which comprises two limiting components which are arranged separately and can fix the intestinal tube therebetween, a support for connecting the two limiting components, and a binding purse-string component which is located between the two limiting components and connected to the support. The device can fix the intestinal tube part which needs to be separated in the intestinal tube by using the two limiting components, avoid a large number of intestinal walls deviating from one side, avoid the retraction of the mucosal layer of the intestinal tube when the purse string is closed, and is beneficial to the binding of the whole layer of the intestinal tube by the binding purse-string component.

Description

Technical Field

[0001] This disclosure specifically discloses an intestinal purse-string embedding device. Background Technology

[0002] In clinical practice, end-to-end anastomosis of the intestine using a circular stapler is a routine surgical procedure. End-to-end anastomosis restores the continuity of the intestine and is the most physiologically consistent anastomosis method. The circular stapler consists of two parts: a mushroom-shaped head (anvil) and the stapler body. These two parts clamp the proximal and distal ends of the intestine, respectively, and perform stapling and cutting. After anastomosis, the two ends of the intestine form a circular anastomosis. The current routine pre-anastomosis intestinal preparation is as follows: On the anvil side: the intestine is clamped with a purse-string forceps, a purse-string suture is passed through the forceps for suturing, the purse-string suture is pulled, and the anvil is embedded; On the stapler body side: the intestine is linearly closed using the stapler, and the stapler's central axis passes through the closed end and is fixed to the anvil. The stapler is then fired to complete the anastomosis.

[0003] Currently, end-to-end anastomosis is widely used and technically mature, but it still has the following operational drawbacks: When embedding the intestinal segment on the anvil side with a purse-string suture, the purse-string suture may penetrate into the contralateral intestinal segment or fail to suture the full thickness; when closing the purse-string suture on the anvil side, the intestinal mucosa layer is prone to retraction, resulting in the purse-string suture not being able to ligate the full thickness of the intestinal segment; because the intestinal segment on the anastomosis device side has a linear closure when severed, when the anastomosis device is fired to form a circular anastomosis, the distal intestinal segment's linear closure cannot be completely removed, leaving a "cat's ear"-like structure that easily leads to anastomotic leakage. Therefore, how to more accurately and conveniently achieve purse-string embedding for end-to-end intestinal anastomosis has become an urgent technical problem that needs to be solved. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, this application aims to provide an intestinal purse-string embedding device, which, compared with the prior art, can more accurately and easily achieve end-to-end anastomosis of the intestinal tract with purse-string embedding.

[0005] An intestinal purse-string embedding device includes: two spaced-apart limiting components capable of fixing an intestinal segment between them; a support member for connecting the two limiting components; and a binding purse-string component located between the two limiting components and connected to the support member.

[0006] According to the technical solution provided in the embodiments of this application, it further includes: a disconnection component located between the binding pouch component and one of the limiting components and used for cutting the intestinal tract.

[0007] According to the technical solution provided in the embodiments of this application, the limiting component has two clamping arms that are respectively connected to the support member;

[0008] When not under stress, the free ends of the two clamping arms remain closed;

[0009] Under stress, the free ends of the two clamping arms move away from each other.

[0010] According to the technical solution provided in the embodiments of this application, the two clamping arms each include: a gripping part connected to the support member and a clamping part integrally formed with the gripping part; the gripping parts of the two clamping arms are connected by a preset elastic element.

[0011] According to the technical solution provided in the embodiments of this application, the gripping parts on the two clamping arms are rotatably connected to the support member, and a torsion spring wrapped around the support member is provided between them.

[0012] According to the technical solution provided in the embodiments of this application, the purse-binding assembly includes: a strapping band with one end connected to the support member and having a coiled structure, and both ends of the strapping band can be locked; the strapping band has a first side relatively far from the support member with pressure needles distributed along its length direction, and when the strapping band is in a locked state at both ends, the free ends of the pressure needles can be brought together.

[0013] According to the technical solution provided in the embodiments of this application, the automatic end of the strapping tape is provided with reverse teeth distributed along its length direction; the other end of the strapping tape is provided with a snap-fit ​​part that can be fixedly connected with the reverse teeth.

[0014] According to the technical solution provided in the embodiments of this application, the separation component includes: two cutting blades respectively symmetrically hinged to the support member; the middle part of each cutting blade is provided with a clearance groove and a clearance space is formed between the two clearance grooves.

[0015] In summary, this application discloses an intestinal purse-string embedding device. Based on the specific structure of the intestinal purse-string embedding device provided by the above technical solution, the device utilizes two limiting components to fix the intestinal portion that needs to be severed, avoiding significant deviation of the intestinal wall to one side. Based on this design, it prevents retraction of the intestinal mucosa layer when the purse-string is closed, facilitating the purse-string binding component to ligate the entire intestinal layer. After the limiting components fix the intestinal segment, the purse-string binding component surrounds the area to be bound between the two limiting components. By locking both ends of the purse-string binding component, and during the locking process, the pressure-gathering needles positioned near the intestinal segment annularly press against the intestinal segment, uniform fixation is achieved. Furthermore, since the pressure-gathering needles can enter the intestinal segment, full-layer fixation of the intestinal segment can be achieved. Compared to the prior art, this intestinal purse-string embedding device can more accurately and conveniently achieve end-to-end anastomosis of the intestinal segment with purse-string embedding.

[0016] Furthermore, this technical solution also includes a disconnection component between the purse-string binding assembly and one of the limiting components, used for cutting the intestinal segment. This disconnection component cuts the intestinal segment relatively close to the intestinal opening via the binding assembly, completely disconnecting it. Afterward, the limiting component can be released. The purse-string binding assembly can detach from the support member or be manually cut off to facilitate subsequent anastomosis operations using the intestinal anastomosis device. Attached Figure Description

[0017] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0018] Figure 1a The diagram shows the specific structure of a purse-string embedding device for intestinal tract.

[0019] Figure 1b The diagram shows the specific structure of a purse-string embedding device for intestinal tract.

[0020] Figure 2 The specific structure of the limiting component shown in Figure 1.

[0021] Figure 3 The specific structure of the purse-binding component shown in Figure 1.

[0022] Figure 4a The specific structure of the disconnect component shown in Figure 1.

[0023] Figure 4b The specific structure of the disconnect component shown in Figure 1.

[0024] Figure 5a The diagram shows the application state of the intestinal purse-string embedding device.

[0025] Figure 5b The diagram shows the application state structure of the disconnect component in Figure 1.

[0026] Figure 5c The diagram shows the application state structure of the disconnect component in Figure 1. Detailed Implementation

[0027] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] Example 1:

[0030] Please refer to Figure 1a The diagram shows the specific structure of a purse-string embedding device for intestinal tract.

[0031] Figure 1a The intestinal purse-string embedding device shown includes: two spaced-apart limiting components 10 that can fix the intestinal segments between them; a support member 20 for connecting the two limiting components 10; and a binding purse-string assembly 30 located between the two limiting components 10 and connected to the support member 20.

[0032] in:

[0033] The support component, which can be a linear rod-shaped structure, connects the two limiting components and mounts other components, such as the binding purse assembly 30, on it. With this support component designed, the limiting components and the binding purse assembly 30 can be stably and reliably positioned, ensuring reliable purse-string embedding of the intestinal tract during actual operation.

[0034] Limiting component 10, please refer to Figure 1a There are two such components, and the two limiting components can fix the intestinal segments between them. The specific fixing method is as follows: the two limiting components are fixed to the intestinal segments respectively, so that the intestinal segments between them can be initially fixed. In particular, the two limiting components are connected to the support members respectively. The support members and the limiting components set at both ends of them form an independent and complete structural system, which effectively fixes the intestinal segments between the two limiting components and fixes the intestinal segments that need to be cut in the intestinal segments. This avoids a large amount of intestinal wall being off-center to one side. Based on this design, the intestinal mucosa layer is prevented from retracting when the purse is closed, which is conducive to the purse assembly being able to ligate the entire intestinal segment.

[0035] The structure of the limiting component is not limited to a specific form, as long as it can achieve a fixed connection between a single limiting component and the intestinal tract. Please refer to [reference needed]. Figure 2 For example, a limiting component clamps the intestinal tract, and the limiting component has two clamping arms 11 respectively connected to a support member; in a non-stressed state, the free ends of the two clamping arms remain closed; in a stressed state, the free ends of the two clamping arms move in a direction away from each other. Specifically, the clamping arms can have a preset shape, such as a curved shape, forming a curved space between the two clamping arms to facilitate the accommodation and clamping of the intestinal tract. Specifically, one end of the clamping arm 11 near the support member 20 is connected to the support member. By applying pressure to the end of the clamping arm near the support member, the free ends of the two clamping arms can move in a direction away from each other, facilitating the insertion of the intestinal tract; when the pressure applied to the end of the clamping arm near the support member is removed, the free ends of the two clamping arms return to the closed state, thus achieving the clamping of the intestinal tract.

[0036] Optionally, each of the two clamping arms 11 includes a gripping portion 111 connected to the support member and a clamping portion 112 integrally formed with the gripping portion 111; the gripping portions of the two clamping arms 11 are connected to each other by a preset elastic element (not shown in the figure). Wherein, the gripping portions on the two clamping arms 11 are rotatably connected to the support member 20, and a torsion spring wound around the support member 20 is also provided between them.

[0037] The two free ends of the torsion spring abut against the adjacent side walls of the two gripping parts. Under the action of the torsion spring, if no external force is applied to the gripping parts, the two free ends of the torsion spring support the two gripping parts at a preset angle, so that the free ends of the two clamping arms remain closed. If an external force is applied to the gripping parts so that the gripping parts overcome the force of the torsion spring, the free ends of the two clamping arms move away from each other, which facilitates the insertion of the intestinal tube. When the pressure applied to the gripping parts is removed, the free ends of the two clamping arms return to the closed state, thus achieving the clamping of the intestinal tube.

[0038] in:

[0039] For details on the purse-binding component 30, please refer to... Figure 3 The structural diagram shown distinguishes it from the purse-string pliers in the prior art. It includes: a strapping band 31 with one end connected to the support member 20 and having a coiled structure, and both ends of the strapping band can be locked. Optionally, the automatic end of the strapping band is provided with reverse teeth 32 distributed along its length direction; the end of the strapping band connected to the support member is provided with a locking part 33 that can be fixed with the reverse teeth. When the end with the reverse teeth is inserted into the locking part, the longer the length of the end inserted into the locking part, the smaller the space formed by the strapping band becomes, so as to facilitate the binding of the intestinal tube and re-fix it to ensure that the intestinal tube between the two limiting components can be stably and tightly fixed without loosening.

[0040] The strapping 31 has pressure needles 34 distributed along its length on the side relatively away from the support member 20. When the strapping is locked at both ends, the free ends of the pressure needles can be brought together. Specifically, the strapping has two ends. One end is connected to the support member and has a locking part, such as a locking sleeve. The other end is a free end with reverse teeth that can mate with the locking part. After the free end enters the locking part, the strapping purse assembly can be wrapped around the intestinal tube. By pulling the free end, the reverse teeth on the strapping can enter the locking part. When the appropriate size is determined, the pulling of the free end is stopped. At this time, the reverse teeth and the locking part cooperate, and the size of the strapping purse assembly is fixed.

[0041] During the pulling of the free end, the pressure-gathering needles gradually move towards the sidewall of the intestinal tract until they are distributed around the intestinal tract. When the counter-tooths engage with the locking part, the size of the binding purse assembly is fixed. At this point, the pressure-gathering needles can enter the sidewall of the intestinal tract to further fix the intestinal tract. The binding purse assembly is used to wrap around the area to be bound between the two limiting components. By locking both ends of the binding purse assembly, the pressure-gathering needles located on the side closest to the intestinal tract during the locking process circumferentially press against the intestinal tract, achieving uniform fixation. Furthermore, since the pressure-gathering needles can enter the intestinal tract, full-layer fixation of the intestinal tract can be achieved. In summary, due to the design of the binding purse assembly, its densely arranged pressure-gathering needles can uniformly fix the intestinal wall, and its needle-type structure can achieve full-layer fixation. Combined with the design of the limiting components, it can effectively solve the technical problems in the prior art.

[0042] After binding is completed, the intestinal tract can be severed from the binding pouch assembly and one of the limiting components using the severing component. During this process, the limiting component is designed to remain effective, preventing the intestinal tract from retracting and accumulating during the severing operation, thus effectively achieving the severing. After severing, the limiting component is removed from the intestinal tract. At this point, the binding pouch assembly can be left on the intestinal tract. Specifically, it can be cut off or removed from the self-supporting component, while maintaining its binding state, thus completing the purse-string operation.

[0043] Example 2:

[0044] Please refer to Figure 1b The diagram shows the specific structure of a purse-string embedding device for intestinal tract.

[0045] Figure 1b The intestinal purse-string embedding device shown includes: two spaced-apart limiting components 10 that can fix the intestinal segment between them; a support member 20 for connecting the two limiting components 10; and a binding purse-string assembly 30 located between the two limiting components 10 and connected to the support member 20; and a cutting component 40 located between the binding purse-string assembly 30 and one of the limiting components 10 for cutting the intestinal segment.

[0046] Unlike Embodiment 1, in this embodiment, a severing component 40 is located on the support member between the binding pouch assembly 30 and one of the limiting components 10, and is used for cutting the intestinal tract. This severing component severs the intestinal tract after the binding pouch assembly has completed binding. Specifically, the severing component can rotate around the support member shown. When not in use, it can rotate to the other side of the support member, i.e., a position not on the same side as the limiting component, to avoid obstructing the binding pouch assembly from its working position.

[0047] Specifically: Please refer to Figure 4a and Figure 4bThe diagram shows the structure of the disconnector assembly.

[0048] Preferably, Figure 4a The separation component 40 includes two cutting blades 41 that are symmetrically hinged to the support member 20; the middle part of each cutting blade 41 is provided with a relief groove 42 and a relief space is formed between the two relief grooves 42.

[0049] The two cutting blades 41 are moved closer to each other so that their cuts correspond to each other and thus achieve separation.

[0050] Preferably, Figure 4b The disconnecting assembly 40 can also refer to the structure of the limiting assembly, adopting a structure of two cutting arms 43. Each cutting arm 43 includes a gripping portion 431 hinged to the support member 20 and a cutting portion 432 connected to the gripping portion 431. A torsion spring wound around the support member is provided between the two gripping portions 431. The free ends of the torsion spring are distributed and abut against the sidewalls of the two gripping portions 431 that are close to each other. Under the action of the torsion spring, if no external force is applied to the gripping portion 431, the two free ends of the torsion spring support the two gripping portions 431 at a predetermined angle, allowing the cutting portion 432 to close tightly. If an external force is applied to the gripping portion 431, causing it to overcome the force of the torsion spring, the free ends of the two cutting arms 43 move away from each other, facilitating the insertion of the intestinal tract. When pressure is applied to the two cutting portions 432, the free ends of the two cutting arms 43 return to the closed state, achieving the cutting of the intestinal tract.

[0051] Specifically, the two cutting portions 432 are provided with clearance grooves 42 on their adjacent sides, and clearance space is formed between the two clearance grooves 42.

[0052] Specific application scenarios are as follows:

[0053] Please refer to Figure 5a The intestinal segment 50 in the figure has two ends, with its right end already severed, as shown by label 51; the anvil end 60 of the intestinal anastomosis device is inserted into the intestinal segment 50 from the severed end 51, as shown. Figure 5a As shown.

[0054] Please refer to Figure 5b As shown, when the two limiting components 10 of the intestinal purse-string embedding device described in any of the above embodiments are clamped onto the intestinal tube between the anvil end 60 and the disconnection end 51, the intestinal tube between the two can be initially fixed, and the connecting rod 61 located in the intestinal tube and used to connect to the anvil end can be initially fixed. At this time, the binding purse-string component and the disconnection component are not in use, so they are not shown in the figure. Specifically, the disconnection component can rotate around the support shown. When not in use, it can rotate to the other side of the support, that is, a position not on the same side as the limiting components, to avoid collisions. Figure 5bThe work location within.

[0055] Please refer to Figure 5c As shown, the intestinal tube between the two limiting components is tied using the purse-string binding assembly 30. During this process, the pressure needles distributed on the binding band can cause the intestinal tube between the two limiting components and corresponding to the binding band to shrink evenly as the binding band gradually shortens, and achieve reliable full-layer fixation under the action of the pressure needles.

[0056] Specifically, in this application scenario, the disconnecting assembly can be rotated to the working position and opened, using its two cutting blades to disconnect the intestinal tube located between the purse-binding assembly and the limiting assembly on the side relatively far from the anvil end 60. The clearance groove on the disconnecting assembly can effectively avoid the connecting rod 61. Of course, the above disconnecting operation can also be performed using a separate disconnecting assembly when no disconnecting assembly is designed.

[0057] After the transection is completed, the limiting component is removed, and then the purse-string assembly is left on the intestinal segment. At this point, the purse-string operation is complete. The intestinal segment cut by the transection assembly is removed, and then the intestinal anastomosis is completed using a stapler. Figure 5c As shown, the removal of the intestinal segment between the severing component and the limiting component that is relatively far from the purse-string assembly is considered on the one hand, that the edges of the severed ends may be uneven, and on the other hand, that the anastomosis chamber capacity of the stapler is limited.

[0058] Specifically, to facilitate the application of the intestinal anastomosis device, two separate ends need to be formed on the intestine. One end is inserted with an anvil as described above, and the anastomosis device body is placed in the other end. The connecting shaft of the anastomosis device body passes through the end. Then, refer to the usage method of the intestinal purse-string embedding device described above: [Refer to...] Figure 5c An intestinal purse-string embedding device is used on the severed end where the anvil is inserted. The purse-string embedding device is first tied and embedded before the severed end is severed. After severed end, the intestinal segment cut by the severing component is removed. Then, the end with the anastomosis device body is aligned with the severed end that has been tied and embedded, and the anastomosis device is activated to complete the anastomosis between the two.

[0059] In the aforementioned application scenario, it addresses the situation where the middle portion of the intestine is first ligated and embedded before being severed. After severance, the intestine segment cut by the severance component is removed, and then the severed ends of the intestine are anastomosed using a stapler. Simultaneously, the limiting component, purse-string ligating component, and severance component, all mounted on the support, work together organically to complete the purse-string ligation process. Compared to existing technologies that only use purse-string forceps, this intestinal purse-string embedding device can more accurately and easily achieve end-to-end anastomosis of the intestine. Specifically, the limiting component defines the end of the intestine to be purse-stringed and, through the mutual restraint between the two components, fixes the portion of the intestine to be severed, preventing significant intestinal wall deviation to one side and avoiding mucosal retraction during purse-string closure. This facilitates the purse-string ligating component in ligating the entire intestinal layer. Furthermore, the pressure-gathering needle design on the purse-string ligating component ensures even ligation of the intestinal segment.

[0060] In another application scenario, when using a cutting and closing device to seal one end of an intestinal segment into a linear closure like sealing a plastic bag, the stapler body is inserted into that side of the intestine, with a shaft protruding from the linear closure. The anvil end of the stapler is inserted into the opposite end of the intestinal segment, and the stapler is activated to anastomose the two intestinal segments. At this point, a ring-shaped anastomosis is created on the linear closure. Therefore, the two ends, or corners, of the linear closure easily form a cat-ear-like structure, which is a weak point in the anastomosis and prone to leakage.

[0061] To avoid the aforementioned problems, the intestinal purse-string embedding device can be used not only at the end of the inserted anvil but also at the end of the inserted anastomosis device. Specifically, the purse-string is tied at the end of the inserted anastomosis device to prevent the formation of a linear closure. After anastomosis is initiated, the two purses fit together without forming a "cat's ear" structure, thus reducing the likelihood of anastomotic leakage and ensuring excellent reliability in use.

[0062] In another preferred embodiment, the disconnecting component can also be mounted on the support member, and can be kept in the same working position as the limiting component and the binding bag component, making the operation process simpler.

[0063] It should be noted that the above figures only schematically represent the structure of the intestinal purse-string embedding device, but do not represent its specific dimensions.

[0064] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A purse-string embedding device for intestinal tract, characterized in that, include: A limiting component with two separate compartments that can secure the intestinal segments between them; Support member used to connect two limiting components; And, a purse-stringer assembly located between the two limiting components and connected to the support; The purse-binding assembly includes: a strapping band with one end connected to the support member and having a coiled structure, and both ends of the strapping band can be locked; the strapping band has pressure needles distributed along its length on a first side relatively away from the support member, and when the strapping band is in a locked state at both ends, the free ends of the pressure needles can be brought together. The two limiting components are connected to the support member respectively. The support member and the limiting components at both ends form an independent and complete structural system, which effectively fixes the intestinal tube between the two limiting components and fixes the part of the intestinal tube that needs to be cut. This avoids a large amount of intestinal wall being off-center to one side and prevents the intestinal mucosa layer from retracting when the purse-string component is closed. This is conducive to the purse-string component being able to ligate the entire intestinal tube.

2. The intestinal purse-string embedding device according to claim 1, characterized in that: It also includes a disconnection assembly located between the purse-binding assembly and one of the limiting assemblies and used for cutting the intestinal tract.

3. The intestinal purse-string embedding device according to claim 1 or 2, characterized in that: The limiting component has two clamping arms that are respectively connected to the support member; When not under stress, the free ends of the two clamping arms remain closed; Under stress, the free ends of the two clamping arms move away from each other.

4. The intestinal purse-string embedding device according to claim 3, characterized in that: The two clamping arms each include: a gripping part connected to the support member and a clamping part integrally formed with the gripping part; the gripping parts of the two clamping arms are connected by a preset elastic element.

5. The intestinal purse-string embedding device according to claim 4, characterized in that: The gripping parts on the two clamping arms are rotatably connected to the support member, and a torsion spring is provided between them and wound around the support member.

6. The intestinal purse-string embedding device according to claim 1, characterized in that: The automatic end of the strapping tape is provided with reverse teeth distributed along its length; the other end of the strapping tape is provided with a snap-fit ​​part that can be fixedly engaged with the reverse teeth.

7. The intestinal purse-string embedding device according to claim 2, characterized in that: The separation assembly includes two cutting blades that are symmetrically hinged to the support member. The cutting blade is provided with clearance grooves in the middle part, and clearance space is formed between the two clearance grooves.

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