Laparoscopic hepatoduodenal ligament occlusion device

Abstract

This utility model discloses a laparoscopic hepatoduodenal ligament occlusion device, comprising: an occlusion band for passing through the Winsor and wrapping around the ligament to tighten it; and a tightening auxiliary component comprising a tube having a head facing the ligament and a tail facing away from the ligament, wherein the tube wall has a threading hole and an anti-loosening structure; wherein: a first end of the occlusion band passes through the threading hole from the head of the tube, and after passing around the ligament, passes back into the head of the tube and exits from the tail of the tube; a second end of the occlusion band is secured outside the threading hole; after the occlusion band is tightened by pulling it, the anti-loosening structure is used to fix the occlusion band.

Description

Technical Field

[0001] This utility model relates to the field of medical technology, and in particular to a medical device. Background Technology

[0002] As is well known, to reduce intraoperative bleeding during laparoscopic hepatectomy, the hepatoduodenal ligament needs to be ligated before the surgery to block its blood supply to the liver. In existing techniques, the instruments and procedures used to ligate the hepatoduodenal ligament are as follows: using relevant instruments (such as dissecting forceps), the ligament is pulled through the foramen of Winthropy and then pulled back to tighten. Then, peptide clips or biological clips are used to hold the ligament in place to maintain the tightening force.

[0003] The above-mentioned process of tightening ligaments and the instruments used have the following defects:

[0004] 1. It is necessary to use the separation forceps to pull the blocking strip through the Winnowing orifice. If the abdominal wall perforation layout is not proper, it will be difficult to adjust the direction and angle of the separation forceps, thus making it difficult to pass through the Winnowing orifice.

[0005] 2. After the ligament is wrapped with the ligament, it is difficult to apply sufficient tightening force, or it takes a long time to apply sufficient tightening force, and it is highly dependent on the doctor's skill level and experience. Utility Model Content

[0006] In view of the above-mentioned technical problems existing in the prior art, the embodiments of this utility model provide a laparoscopic hepatoduodenal ligament blocking device.

[0007] To solve the above-mentioned technical problems, the technical solution adopted in the embodiments of this utility model is as follows:

[0008] A laparoscopic hepatoduodenal ligament occlusion device, comprising:

[0009] An interlocking band is used to tighten the ligament after passing through the Winsor and wrapping around it.

[0010] The tightening auxiliary component includes a tube having a head facing the ligament and a tail facing away from the ligament. The tube wall has threading holes and an anti-loosening structure. Wherein:

[0011] The first end of the blocking strip passes through the threading hole from the head of the tube, and after passing around the ligament, it reverses and passes into the head of the tube and exits from the tail of the tube. The second end of the blocking strip is secured outside the threading hole.

[0012] After the ligament is tightened by pulling the occlusion band, the occlusion band is fixed with the help of the anti-loosening structure.

[0013] Preferably, the head of the tube is provided with a passivation portion.

[0014] Preferably, the passivation portion is formed by bending the tube wall of the tube head outwards in the opposite direction.

[0015] Preferably, the anti-loosening structure includes a stepped section formed on the pipe body and a wedge-shaped locking groove formed on the pipe wall of the pipe body; wherein:

[0016] The blocking strip is secured at the wedge-shaped joint after being wrapped around the stepped section.

[0017] Preferably, the wedge-shaped slot is formed by a piece cut from the tube wall and defined by the tube wall.

[0018] Preferably, the section of the blocking strip at the first end is configured as a hardened section.

[0019] Preferably, a plastic tube is fitted over the first end of the blocking strip to form the hardened section.

[0020] Preferably, the tube body is coated with a silicone layer.

[0021] Compared with the prior art, the beneficial effects of the laparoscopic hepatoduodenal ligament occlusion device provided by the embodiments of this utility model are:

[0022] 1. The ligament blocking device provided by this utility model, by configuring a hardened section at the first end (i.e., the perforation end) of the blocking band, avoids pulling the blocking band through the Winchester foramen with the separating clamps when inserting it, thus simplifying the operation of inserting it through the Winchester foramen.

[0023] 2. The ligament blocking device provided by this utility model can more easily apply sufficient force to tighten the ligament by configuring a tightening auxiliary component.

[0024] 3. The tightening auxiliary component provided by this utility model has the advantages of being easy to disinfect and reusable.

[0025] The overview of various implementations or examples of the technology described in this utility model is not a complete disclosure of the full scope or all features of the disclosed technology. Attached Figure Description

[0026] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with or without letter suffixes may indicate different instances of similar parts. The drawings generally illustrate various embodiments by way of example rather than limitation and, together with the description and claims, serve to explain embodiments of the utility model. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method.

[0027] Figure 1 A physical image of the tightening auxiliary component in the ligament blocking device provided for an embodiment of this utility model.

[0028] Figure 2 A three-dimensional structural diagram of the ligament blocking device provided in an embodiment of this utility model.

[0029] Figure 3 A schematic diagram of the blocking band in the intestinal ligament blocking device provided in an embodiment of this utility model.

[0030] Figure 4 A cross-sectional view of the ligament blocking device provided in an embodiment of the present invention during the tightening process.

[0031] Figure 5 A front view of the ligament blocking device provided in an embodiment of the present invention during the tightening process.

[0032] In the picture:

[0033] 10-Blocking band; 11-Hardened section; 12-Knot; 20-Tightening auxiliary component; 21-Tube body; 211-Tube hole; 22-Passivated section; 23-Threading hole; 24-Stepped section; 25-Sheet body; 26-Wedge-shaped suture; 100-Ligament; 200-Winsor hole. Detailed Implementation

[0034] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0036] like Figures 1 to 3 As shown, this utility model discloses a duodenal ligament 100 blocking device, which includes: a blocking band 10 and a tightening auxiliary component 20.

[0037] The blocking strip 10 can be made of nylon material, so that the blocking strip 10 is flexible. The first end (i.e., the front end) of the blocking strip 10 is configured with a hardened section 11. For example, the section at the first end is made into a hardened section 11 by a plastic tube being fitted on it through a thermoplastic process. The hardened section 11 has a certain degree of rigidity. The second end (i.e., the end) of the blocking strip 10 is tied into a knot 12.

[0038] The ligation aid 20 includes a tube 21, which can be made of plastic material, i.e., a plastic tube, or a metal tube. The tube 21 has a head and a tail. The head of the tube 21 is directed toward the hepatoduodenal ligament 100 (hereinafter referred to as the ligament 100). A blunting portion 22 is provided at the head of the tube 21. For example, the blunting portion 22 with a certain rounded corner is formed by bending the wall of the head of the tube 21 outwards. When the bottom of the tube 21 abuts against the ligament 100, the blunting portion 22 can prevent the head of the tube 21 from damaging the ligament 100. Preferably, a silicone layer or a plastic layer is disposed at the blunting portion 22 to further prevent damage to the tissues and ligament 100 traversed by the ligation aid 20 during the operation. Silicone or plastic layers are also provided at other structural locations of the tube 21 that may damage human tissue, for example, silicone or plastic layers are also provided at the sheet 25 mentioned below.

[0039] The tube body 21 has a wire-passing hole 23 on the tube wall near the head. When in use, the first end of the blocking strip 10 passes through the wire-passing hole 23, and the second end of the blocking strip 10 is locked outside the wire-passing hole 23 because it has a knot 12.

[0040] The tube body 21 is provided with an anti-loosening structure to prevent the blocking band 10 from loosening on its own after the ligament 100 is tightened. Specifically, the anti-loosening structure includes a stepped section 24 and a wedge-shaped locking seam 26. The stepped section 24 is formed by removing part of the tube wall from the tail section of the tube body 21. The wedge-shaped locking seam 26 is located in front of the stepped section 24 and is formed by a piece 25 cut from the tube wall of the tube body 21 and defined by the tube wall. During the tightening of the ligament 100, the blocking band 10 is wrapped around the stepped section 24 several times and then passes through the wedge-shaped locking seam 26 and is locked at the wedge-shaped locking seam 26.

[0041] like Figure 4 and Figure 5 As shown, the following describes how to use the ligament 100 blocking device.

[0042] First, before inserting the blocking device into the patient's body, the first end of the blocking band 10 passes through the threading hole 23 of the tightening auxiliary component 20 and through the tube hole 211 of the tube body 21 from the head of the tube body 21 until the knot 12 of the second end of the blocking band 10 is locked at the threading hole 23, thereby connecting the second end of the blocking band 10 to the tube body 21.

[0043] The blocking device, in the aforementioned state, is inserted into the vicinity of the ligament 100 in the patient's body through an abdominal wall opening. The first instrument is used to hold the ligament 100 with the head of the tube 21 facing the ligament 100. The second instrument (e.g., a dissecting forceps) is used to clamp the rear end of the hardened section 11 of the blocking band 10. Then, the hardened section 11 is passed through the Winsor hole 200 first. Since the first end of the blocking band 10 is configured with the hardened section 11, the second instrument does not need to pull the blocking band 10 through the Winsor hole 200 together, thus simplifying the operation of passing the blocking band 10 through the Winsor hole 200.

[0044] Then, the second instrument clamps the blocking band 10 passing through the Winsor foramen 200 from the opposite side of the ligament 100, so that the blocking band 10 wraps around the ligament 100, thereby preparing for ligament 100 to be tightened.

[0045] Then, using the second instrument, the hardened section 11 of the blocking band 10 is made to pass through the tube hole 211 from the head of the tube body 21 to the tail of the tube body 21. Then, the second instrument is used to clamp the blocking band 10 that has passed through the tail of the tube body 21 again, and force is applied to pull the blocking band 10. At the same time, the first instrument can be pushed against the tube body 21 in the direction of the ligament 100, thereby tightening the blocking band 10 onto the ligament 100. At the same time, during the pulling process, the blocking band 10 is wrapped around the stepped section 24 several times, and then it passes through the wedge-shaped clamp 26 and is clamped at the wedge-shaped clamp 26, thereby completing the tightening of the ligament 100.

[0046] Postoperatively, the process of loosening ligament 100 is the reverse of the process of tightening ligament 100.

[0047] Furthermore, although exemplary embodiments have been described in this invention, its scope includes any and all embodiments based on this invention that have equivalent elements, modifications, omissions, combinations (e.g., schemes involving intersections of various embodiments), adaptations, or alterations. Elements in the claims will be interpreted broadly based on the language used in the claims and are not limited to the examples described in this specification or during the implementation of this application, which will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered illustrative only, and the true scope and spirit are indicated by the following claims and the full scope of their equivalents.

[0048] The above description is intended to be illustrative and not restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. Other embodiments can be used by those skilled in the art when reading the above description. Furthermore, in the above detailed description, various features may be grouped together to simplify the invention. This should not be construed as an intention that a disclosed feature not claimed is necessary for any claim. Rather, the subject matter of the invention may be less than all the features of a particular disclosed embodiment. Thus, the following claims are incorporated herein by reference as examples or embodiments, wherein each claim is an independent, separate embodiment, and these embodiments are contemplated to be combined with each other in various combinations or arrangements. The scope of the invention should be determined by reference to the appended claims and the full scope of their equivalents.

[0049] The above embodiments are merely exemplary embodiments of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this utility model.

Claims

1. A laparoscopic hepato-duodenal ligament blocking device, characterized in that, include: An interlocking band is used to tighten the ligament after passing through the Winsor and wrapping around it. The tightening auxiliary component includes a tube having a head facing the ligament and a tail facing away from the ligament. The tube wall has threading holes and an anti-loosening structure. Wherein: The first end of the blocking strip passes through the threading hole from the head of the tube, and after passing around the ligament, it reverses and passes into the head of the tube and exits from the tail of the tube. The second end of the blocking strip is secured outside the threading hole. After the ligament is tightened by pulling the occlusion band, the occlusion band is fixed with the help of the anti-loosening structure.

2. The laparoscopic hepatoduodenal ligament blocking device according to claim 1, characterized in that, The head of the tube is provided with a passivation section.

3. The laparoscopic hepatoduodenal ligament blocking device according to claim 2, characterized in that, The passivation section is formed by bending the tube wall outwards in the opposite direction at the head of the tube.

4. The laparoscopic hepatoduodenal ligament blocking device according to claim 1, characterized in that, The anti-loosening structure includes a stepped section formed on the pipe body and a wedge-shaped locking groove formed on the pipe wall of the pipe body; wherein: The blocking strip is secured at the wedge-shaped joint after being wrapped around the stepped section.

5. The laparoscopic hepatoduodenal ligament blocking device according to claim 4, characterized in that, The wedge-shaped slot is formed by a piece cut from the tube wall and defined by the tube wall.

6. The laparoscopic hepatoduodenal ligament blocking device according to claim 1, characterized in that, The section of the blocking band at the first end is configured as a hardened section.

7. The laparoscopic hepatoduodenal ligament blocking device according to claim 6, characterized in that, A plastic tube is fitted over the first end of the blocking strip to form the hardened section.

8. The laparoscopic hepatoduodenal ligament blocking device according to claim 1, characterized in that, The tube body is coated with a silicone layer.

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