Pancreas strapping tape capable of quantifying strapping pressure

Abstract

The invention discloses a pancreas strapping tape capable of quantifying strapping pressure, and belongs to the technical field of medical instruments, the pancreas strapping tape comprises a first non-extension section and a second non-extension section, an elastic section and a limiting rope are arranged between the first non-extension section and the second non-extension section, and an insertion hole is formed in the head end of the first non-extension section. The quantitative binding force is provided for the pancreatic stump, sufficient bursting pressure can be provided for the main pancreatic duct, complete pancreatic ischemia and acute pancreatic necrosis caused by too high binding pressure are avoided, and the risk of pancreatic fistula and pancreatitis caused by acute pancreatic necrosis is reduced; due to the design of the limiting rope, whether preset binding tension is reached or not can be easily judged in the binding process; when pancreatic tissue is shrunk in the postoperative process, the strapping tape can still continue to provide strapping pressure through contraction of the elastic section, the strapping pressure generated in the postoperative process is reduced in a limited mode, enough bursting pressure can still be provided for the main pancreatic duct, and the risk of pancreatic fistula caused by insufficient bursting pressure of the main pancreatic duct is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a pancreatic ligature for quantifying ligature pressure. Background Art

[0002] When diseases such as space-occupying lesions occur in the body and tail of the pancreas, surgical resection is often required. After resection of the diseased part, the stump of the pancreas needs to be treated. Currently, the mainstream methods for treating pancreatic stumps include closing with a stapler and manual suture ligation. However, all pancreatic stump treatment methods, including the above two methods, have a very high risk of postoperative pancreatic fistula. Summary of the Invention

[0003] The purpose of the present invention is to provide a pancreatic ligature for quantifying ligature pressure to solve the problem of pancreatic fistula at the pancreatic stump.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A pancreatic ligature for quantifying ligature pressure of the present invention includes a first non-extensible section and a second non-extensible section. An elastic section and a limiting rope are arranged between the first non-extensible section and the second non-extensible section, and a jack is arranged at the head end of the first non-extensible section.

[0006] Further, a first socket hole is arranged at the tail end of the first non-extensible section, a second socket hole is arranged at the head end of the second non-extensible section, and two ends of the elastic section are respectively arranged in the first socket hole and the second socket hole.

[0007] Still further, the number of the limiting ropes is set to be at least one.

[0008] Still further, the elastic section is set as an elastic ring or an elastic band.

[0009] Still further, the first non-extensible section and the second non-extensible section are made of a flexible non-extensible medical material.

[0010] Still further, linear structures perpendicular to the main body part and pointing in the direction of the spleen are arranged on the first non-extensible section and the second non-extensible section.

[0011] Still further, longitudinal raised stripes are arranged on the contact surfaces of the first non-extensible section and the second non-extensible section with the pancreas.

[0012] Still further, the longitudinal raised stripes may also be arranged on the side of the elastic section facing the pancreatic surface.

[0013] Still further, a reinforcing ring is arranged in the circular regions of the first non-extensible section and the second non-extensible section.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0015] The method for treating the pancreatic stump applying this technology belongs to a novel and original method for treating the pancreatic stump. Compared with the existing methods for treating the pancreatic stump with a cutting stapler and manual suture, it has the following benefits:

[0016] 1. It provides a quantified ligation force for the pancreatic stump, which can provide sufficient bursting pressure for the main pancreatic duct while avoiding complete ischemia and acute necrosis of the pancreas caused by excessive ligation pressure, and reducing the risks of pancreatic fistula and pancreatitis caused by acute pancreatic necrosis.

[0017] 2. The design of the limiting rope makes it easy to judge whether the predetermined ligation tension is reached during the ligation process.

[0018] 3. When the pancreatic tissue atrophies during the postoperative process, through the contraction of the elastic section, the ligating band can still continue to provide ligation pressure, and the ligation pressure generated during the postoperative process decreases limitedly, still providing sufficient bursting pressure for the main pancreatic duct and reducing the risk of pancreatic fistula caused by insufficient bursting pressure of the main pancreatic duct.

[0019] 4. The method for treating the pancreatic stump based on this technology does not require searching for the main pancreatic duct, reducing the surgical difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the drawings.

[0021] Figure 1 It is the front view of the first embodiment of the present invention;

[0022] Figure 2 It is the three-dimensional structure diagram of the first embodiment of the present invention;

[0023] Figure 3 It is the three-dimensional structure diagram of the first embodiment of the present invention in the ligated state;

[0024] Figure 4 It is the three-dimensional structure diagram of the linear structure of the first embodiment of the present invention;

[0025] Figure 5 It is the three-dimensional structure diagram of the longitudinal convex stripes of the first embodiment of the present invention;

[0026] Figure 6 It is the front view of the second embodiment of the present invention;

[0027] Figure 7 It is the three-dimensional structure diagram of the second embodiment of the present invention in the ligated state;

[0028] Description of reference numerals: 1. First non-extensible section; 1-1. Socket; 1-2. First socket hole; 2. Second non-extensible section; 2-1. Second socket hole; 3. Elastic section; 4. Limiting rope; 5. Linear structure; 6. Longitudinal raised stripe; 7. Reinforcing ring. Detailed implementation manners

[0029] Embodiment 1

[0030] As Figures 1-5 shown, a pancreatic ligature for quantifying ligature pressure includes a first non-extensible section 1 and a second non-extensible section 2. An elastic section 3 and a limiting rope 4 are arranged between the first non-extensible section 1 and the second non-extensible section 2. A socket 1-1 is arranged at the head end of the first non-extensible section 1.

[0031] The elastic section 3 is arranged as an elastic ring or an elastic band; in this embodiment, the elastic section 3 is an elastic ring.

[0032] A first socket hole 1-2 is arranged at the tail end of the first non-extensible section 1, a second socket hole 2-1 is arranged at the head end of the second non-extensible section 2, and two ends of the elastic ring are respectively sleeved in the first socket hole 1-2 and the second socket hole 2-1.

[0033] The number of the limiting ropes 4 is arranged as one or two, and the limiting rope 4 is located between the first non-extensible section 1 and the second non-extensible section 2; if the number of the limiting ropes 4 is arranged as two, the two limiting ropes 4 are arranged on both sides of the elastic section 3 and have the same length; the limiting rope 4 can limit the stretching length of the elastic ring, and the length of the limiting rope 4 is equal to the length of the elastic ring when the elastic ring is pulled to a predetermined tension.

[0034] The elastic section 3 can also be an elastic band and is connected to the first non-extensible section 1 and the second non-extensible section 2 by means of gluing or the like.

[0035] As Figure 3 shown, after the pancreatic ligature is ligated, elastic force can be provided through the elastic stretching of the elastic ring to ligate the pancreas, and the elastic force of the elastic ring is of appropriate magnitude. When in use, when the elastic ring is pulled until the limiting rope 4 is of the same length as the elastic ring, the ligating tension provided by the elastic ring for the ligature is the predetermined tension. Under this predetermined tension, the ligature will not apply too much pressure to the pancreas to cause pancreatic necrosis; and it can ensure that sufficient pancreatic duct bursting pressure is provided for the pancreatic stump, and insufficient pressure cannot be provided for the pancreatic ligature due to too low tension, resulting in insufficient pancreatic duct bursting pressure at the pancreatic stump. The typical bursting pressure provided by the ligature for the pancreatic duct is 40-70 mmHg. During the process of pancreatic contraction after the operation, the elastic force released by the elastic ring can also ensure that the ligature can stably ligate the pancreas and continuously provide sufficient bursting pressure for the pancreatic duct. The typical bursting pressure provided by the ligature for the pancreatic duct after the operation is not less than 30 mmHg.

[0036] The first non-extensible section 1 and the second non-extensible section 2 are made of flexible non-extensible medical materials, which may be, but are not limited to, polypropylene, polytetrafluoroethylene, etc. The typical structure is a flat structure formed by hot melting or pasting of multiple single-strand linear materials, and similar effects can also be achieved through other processes. Color coating makes it easy to distinguish between the tissue contact surface and the non-tissue contact surface of the strapping belt when in use.

[0037] The annular structures on the first non-extensible section 1 and the second non-extensible section 2 can be formed by bending the linear structure forming the main body of the above structure, or can be formed into separate annular structures and then connected to the main body by hot melting or gluing.

[0038] The reinforcement method may be, but is not limited to, implanting metal materials, implanting non-flexible polymer materials, etc. The ring structure can reduce the softness of the ring structure through various hardening measures to increase the usability of the device. The reinforcement method may be, but is not limited to, implanting metal materials, implanting non-flexible polymer materials, etc. The main part of the first non-extension section structure has a typical length of 5 mm. Figure 4 As shown, a linear structure 5 perpendicular to the main part and pointing to the spleen is provided on the main structure of the first non-extension segment and the second non-extension segment, with a typical length of 5-10 mm, for indicating the pancreatic cut line. The linear structure 5 is a flexible structure, and is perpendicular to the binding belt in a non-stressed state. It is easy to bend when stressed. After the head end of the second non-extension segment 2 is inserted into the insertion hole 1-1 of the first non-extension segment 1, pulling the head end of the second non-extension segment 2 can make the linear structure 5 passing through the insertion hole 1-1 bend and easily pass through the insertion hole 1-1.

[0039] like Figure 5 As shown, the first non-stretchable segment 1 and the second non-stretchable segment 2 are provided with longitudinal raised stripes 6 on the pancreatic contact surface (in some embodiments, the side of the elastic ring facing the pancreatic surface may also be provided with longitudinal raised stripes 6), so as to improve the stability of the cable tie during tying, avoid side slipping of the cable tie during tying, and make it easy for the cable tie to slide relative to the pancreatic tissue during the tightening process. In addition, the longitudinal raised stripes 6 can further make it easier to distinguish between the tissue contact surface and the non-tissue contact surface. If the structure of the first non-stretchable segment 1 and the second non-stretchable segment 2 is obtained by pasting or hot-melting multiple single-strand linear materials, the obtained structure itself already has longitudinal raised stripes.

[0040] The non-pancreatic contact surfaces of the first non-stretchable segment 1 and the second non-stretchable segment 2 are rough surfaces and may also be coated with a flexible material (in some embodiments, the side of the elastic ring facing the non-pancreatic surface may also be rough surfaces and may also be coated with a flexible material), thereby preventing relative sliding between the ligation clamp and the ligation strap when the ligation strap is tightened and fixed with the ligation clamp.

[0041] Example Two

[0042] As Figures 6-7 shown, in this example, on the basis of Example One, the structures of the first non-extended section 1 and the second non-extended section 2 are improved. The specific difference is that the first non-extended section 1 and the second non-extended section 2 can be arranged side by side with cord-like lines and then connected by hot melting or pasting to form longitudinal raised stripes 6, or can be directly formed into longitudinal raised stripes 6 by using a polymer material forming method. A reinforcing ring 7 is arranged in the annular regions of the first non-extended section 1 and the second non-extended section 2 for reinforcement. The connection parts of the first non-extended section 1, the second non-extended section 2 and the annular regions thereof can be fixed by means such as welding and heat shrinking of a heat shrinkable tube.

[0043] The usage method of the present invention is as follows:

[0044] When in use, after establishing the posterior pancreatic tunnel, the tail end of the second non-extended section 2 is passed around the upper edge of the pancreas from the front of the pancreas in the direction with the pancreatic contact surface facing the pancreas through a surgical instrument, passes through the back of the pancreas, and is pulled to the lower edge of the pancreas;

[0045] The tail end structure of the second non-extended section 2 is passed through the annular structure at the head end of the first non-extended section 1;

[0046] The head end annular structure of the first non-extended section 1 is fixed with a surgical instrument, and at the same time, the tail end of the second non-extended section 2 is pulled with a surgical instrument until the linear stretching limit indication structure is in a straight line state. At this time, the elastic ring has been pulled to a predetermined length.

[0047] A ligation clip is used to clamp the second non-extended section 2 close to the head end annular structure of the first non-extended section 1;

[0048] The pancreas is cut along the indication lines of the first non-extended section 1 and the second non-extended section 2 with an energy instrument, and the treatment of the pancreatic stump is completed;

[0049] The redundant second non-extended section 2 is cut off.

[0050] The pancreatic ligation band of the present invention includes an elastic section, which can continuously provide appropriate ligation pressure for the pancreatic stump after surgery. The setting of the limit rope on the elastic section facilitates intraoperative judgment and implementation of pulling the elastic section to a predetermined length, so as to provide a predetermined ligation pressure for the ligation band. The design of the longitudinal stripes on the pancreatic contact surface of the ligation band ensures that the ligation band is easy to slide along the long axis direction of the ligation band on the pancreatic surface, and is not easy to slide in the direction perpendicular to the long axis of the ligation band. The design of the cutting line indication line facilitates accurate cutting of the pancreas according to the indication line during surgery.

[0051] The present invention provides a pancreatic ligature that can quantify the ligature pressure, providing a quantified ligature pressure for ligating the pancreatic stump and continuously providing an appropriate ligature pressure during the postoperative process. By applying this device and combining it with the method of treating the pancreatic stump using energy instruments for transection, it is possible to provide sufficient pancreatic duct bursting pressure for the pancreatic stump while reducing the risk of acute necrosis of the pancreatic stump, thereby greatly reducing the risk of postoperative pancreatic fistula. In addition, this ligature has a flexible structure, and it is easier to ligate the pancreas than using a stapler. It can still be used to transect the pancreas when the anatomical space is small and it is impossible to establish a posterior pancreatic tunnel suitable for a stapler.

[0052] When ligating pancreatic tissue, it is necessary to quantify the ligating force. Excessive ligature pressure will cause acute necrosis of the pancreas, and insufficient ligature pressure cannot provide sufficient bursting pressure for the pancreatic duct. The important innovation of the present invention is that there is an elastic material structure and a matching length-limiting structure in the ligature, which can provide an appropriate ligature pressure for ligating the pancreas, and during the atrophy process of the pancreatic tissue after surgery, the elastic structure can partially contract to continue providing ligature pressure for the pancreas, thereby achieving the purpose of preventing pancreatic fistula.

[0053] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A pancreatic strapping band for quantifying strapping pressure, characterized in that: The invention comprises a first non-extensible section (1) and a second non-extensible section (2); an elastic section (3) and a limiting rope (4) are arranged between the first non-extensible section (1) and the second non-extensible section (2); and a plug hole (1-1) is arranged at the head end of the first non-extensible section (1).

2. The pancreatic strapping band with quantified strapping pressure according to claim 1, characterized in that: The tail end of the first non-extension section (1) is provided with a first sleeve hole (1-2), the head end of the second non-extension section (2) is provided with a second sleeve hole (2-1), and the two ends of the elastic section (3) are respectively arranged in the first sleeve hole (1-2) and the second sleeve hole (2-1).

3. The pancreatic strapping band with quantified strapping pressure according to claim 1, characterized in that: The number of the limiting rope (4) is set to be at least one.

4. The pancreatic strapping band for quantifying strapping pressure according to claim 1, characterized in that: The elastic section (3) is configured as an elastic ring or an elastic band.

5. The pancreatic strapping band for quantifying strapping pressure according to claim 1, characterized in that: The first non-stretchable section (1) and the second non-stretchable section (2) are made of flexible non-stretchable medical material.

6. The pancreatic strapping band for quantifying strapping pressure according to claim 1, characterized in that: The first non-extension segment (1) and the second non-extension segment (2) are provided with a linear structure (5) perpendicular to the main body and pointing in the direction of the spleen.

7. The pancreatic strapping band for quantifying strapping pressure according to claim 1, characterized in that: The first non-extensible section (1) and the second non-extensible section (2) are provided with longitudinal raised stripes (6) on the surfaces in contact with the pancreas.

8. The pancreatic strapping band for quantifying strapping pressure according to claim 7, characterized in that: The longitudinal raised stripes (6) may also be provided on the side of the elastic section (3) facing the pancreatic surface.

9. The pancreatic strapping band for quantifying strapping pressure according to claim 1, characterized in that: The annular regions of the first non-extensible section (1) and the second non-extensible section (2) are provided with reinforcement rings (7).

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