Porta hepatis blocker convenient to observe

Abstract

The utility model belongs to the field of medical instruments, and particularly relates to a porta hepatis blocker convenient to observe. The porta hepatis blocker is convenient to use and observe. The blocker comprises a fixing ring, a drawstring, a stop block, an elastic piece and the like, the outer end of the fixing ring is connected with the drawstring, a guide groove is formed in the side, opposite to the drawstring, of the fixing ring, the stop block is arranged in the guide groove in a sliding and sleeved mode, and the elastic piece is connected between the inner side of a groove and the stop block. The scale marks with striking colors are additionally arranged at the tail part of the blocker, so that the tightness of next hepatic portal occlusion can be adjusted according to the effect of previous blood flow occlusion, and proper scales are recorded, and the blocker is flexible and convenient to use; and convex teeth at the inner ends of the stopping blocks are matched with anti-slip strips and elastic pieces at the inner ends of the fixing rings, so that the purpose of clamping and limiting the drawstring at will can be achieved, the excessive drawstring after use can be clamped through the limiting rods, and then the purpose of further reinforcing the drawstring is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of medical devices, specifically a hepatic hilum blocker that is easy to observe. Background Technology

[0002] The liver has a rich blood supply, and significant bleeding occurs during surgery, necessitating the closure of blood flow into the liver to reduce intraoperative hemorrhage. The blood flow into the liver primarily originates from the hepatic artery and portal vein. The hepatic artery, portal vein, and common bile duct form the hepatic pedicle, which converges into the liver at the first hepatic hilum. Previously, methods such as using a urinary catheter or the edge of a glove to tie a knot around the hepatic pedicle and block the first hepatic hilum were commonly employed to obstruct blood flow into the liver.

[0003] Currently, the existing occlusion method typically uses the pringle technique, which involves intermittently blocking blood flow into the liver for 15 minutes, then releasing the occluder for 5 minutes to allow blood flow to return. This repeated blocking and releasing of blood flow can reduce ischemic damage to the liver. However, there is no uniform standard for the tightness of the hepatic hilum occlusion; it is often determined based on intraoperative experience. However, excessively tight occlusion can cause damage to vital tissues such as the hepatic artery, portal vein, or common bile duct, leading to complications. Conversely, excessively loose occlusion results in poor control of blood flow into the liver, leading to significant intraoperative hepatic bleeding. Furthermore, the tightness of the first hepatic hilum occlusion varies from patient to patient, lacking a scientifically sound and easily observable indicator.

[0004] In view of this, a convenient and easy-to-observe hepatic hilum blocker is proposed to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to overcome the shortcomings of existing blocking devices in practical use, such as the inconvenience of flexibly adjusting the tightness and visually observing the degree of blockage, the technical problem of this utility model is to provide a hepatic portal blocker that is convenient to use and easy to observe.

[0006] The technical implementation scheme of this utility model is as follows: a hepatic hilum occluder that is easy to observe, including a fixing ring and a pull strap. The outer end of the fixing ring is connected to the pull strap. It also includes a marking ring, a scale value, a blocking block, an elastic element, an anti-slip strip, and a limiting structure. The pull strap is evenly spaced with marking rings and scale values ​​for observing the tightness of the hepatic hilum. A guide groove is opened on the side of the fixing ring opposite to the pull strap. The blocking block is slidably fitted in the guide groove. A groove is provided on the outer side of the fixing ring. An elastic element is connected between the inner side of the groove and the blocking block. Anti-slip strips are spaced on the inner side of the blocking block to increase the friction coefficient of the pull strap passing through the inner side of the fixing ring. The blocking block is provided with a limiting structure for clamping the pull strap.

[0007] As a further improvement to the above technical solution, the limiting structure is mainly composed of a limiting rod and a sliding groove. The outer side of the blocking block is provided with a sliding groove, and the limiting rod is slidably connected in the sliding groove. The outer end of the limiting rod is designed as a bent part.

[0008] As a further improvement to the above technical solution, the limiting rod is designed with an n-shaped structure.

[0009] As a further improvement to the above technical solution, protrusions are provided at intervals on both ends of the fixing ring.

[0010] As a further improvement to the above technical solution, one end of the blocking block located inside the fixing ring is designed with an arc-shaped structure, which is adapted to the contour of the outer wall of the pull strap.

[0011] As a further improvement to the above technical solution, the inner side of the arc-shaped portion is provided with protruding teeth for abutting against the pull strap.

[0012] Compared with the prior art, this utility model has the following advantages: by adding a brightly colored scale mark at the tail of the blocker, the tightness of the next hepatic portal vein block can be adjusted according to the effect of the previous blood flow blockage and the appropriate scale can be recorded, making it flexible and convenient to use; and through the cooperation of the protruding teeth at the inner end of the blocking block and the anti-slip strip and elastic element at the inner end of the fixing ring, the purpose of arbitrarily clamping and limiting the pull strap can be achieved, and the limit rod can clamp the excess pull strap after use, which is conducive to further reinforcing the pull strap. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a partial three-dimensional structural diagram of the present invention.

[0015] Figure 3 This is a structural separation diagram of the fixing ring and the blocking block of this utility model.

[0016] Figure 4 This is a structural separation diagram of the blocking block and the limiting rod of this utility model.

[0017] The components in the attached diagram are labeled as follows: 1. Fixing ring, 2. Pull strap, 3. Marking ring, 4. Scale value, 5. Blocking block, 50. Arc-shaped part, 51. Protruding tooth, 52. Slide groove, 6. Elastic element, 7. Anti-slip strip, 8. Protrusion, 9. Limiting rod, 90. Bending part, 10. Guide groove, 11. Groove. Detailed Implementation

[0018] First, it should be noted that in different described embodiments, the same components are given the same reference numerals or the same component names. The disclosure contained throughout this specification can be applied semantically to the same components having the same reference numerals or the same component names. The location descriptions selected in the specification, such as upper, lower, lateral, etc., also refer to the directly described and illustrated figures and are semantically applied to the new location when the location changes.

[0019] Example: This utility model provides a hepatic hilum blocker that is easy to observe, see [link / reference]. Figures 1 to 4 As shown, the device includes a fixing ring 1, a pull strap 2, a marking ring 3, a scale value 4, a blocking block 5, an elastic element 6, an anti-slip strip 7, and a limiting structure. The fixing ring 1 has protrusions 8 spaced apart at both ends to prevent slippage when the surgeon holds it. The outer end of the fixing ring 1 is connected to the pull strap 2, which has marking rings 3 and scale values ​​4 evenly spaced on it for observing the degree of hepatic hilum occlusion. The marking rings 3 and scale values ​​4 are different colors for easier viewing by the surgeon. A guide groove 10 is provided on the side of the fixing ring 1 opposite to the pull strap 2. A blocking block 5 is slidably fitted within the guide groove 10. One end of the blocking block 5 located inside the fixing ring 1 has an arc-shaped section 50 structure, which matches the outer contour of the pull strap 2, facilitating a tight fit with the elliptical pull strap 2 and improving the grip on the pull strap 2. The stability during use; the inner side of the arc-shaped part 50 is provided with protruding teeth 51 for abutting against the pull strap 2, which is conducive to further tightening and reinforcing the pull strap 2; the outer side of the fixing ring 1 is provided with a groove 11, and the inner side of the groove 11 is connected to the blocking block 5 with an elastic element 6. The inner side of the blocking block 5 is provided with anti-slip strips 7 to increase the friction coefficient of the pull strap 2 passing through the inner side of the fixing ring 1. The blocking block 5 is provided with a limiting structure for tightening the pull strap 2. The limiting structure is mainly composed of a limiting rod 9 and a sliding groove 52. The outer side of the blocking block 5 is provided with a sliding groove 52, and the limiting rod 9 is slidably connected in the sliding groove 52. The outer end of the limiting rod 9 is designed with a bent part structure, which makes it easy to pull the limiting rod 9 outward with tools such as hemostats, and to tighten the excess pull strap 2 after use, so as to further tighten and reinforce the pull strap 2.

[0020] By adding brightly colored scale markings to the tail of the blocker, with different colors every 1 cm, surgeons can more intuitively see the degree of hepatic hilum blockage. In actual use, the end of the pull strap 2 is wrapped around the hepatic hilum and inserted into the fixing ring 1. The blocking block 5 is pulled outward. When the pull strap 2 is tightened to a certain extent, the blocking block 5 is released. Under the pulling force of the elastic element 6, the protrusion 51 at the inner end of the blocking block 5 can abut against the pull strap 2. Through the cooperation of the anti-slip strip 7 and the protrusion 51, the pull strap 2 can be clamped and fixed. The limiting rod 9 is pulled outward, and the tail end of the pull strap 2 is... Passing through the limiting rod 9 effectively prevents the end of the pull strap 2 from becoming too long and also reinforces the pull strap 2, effectively preventing it from slipping or loosening during use. In addition, the color of the clamp when it is fastened is recorded during the first hepatic hilum occlusion. During the second occlusion, the tightness is adjusted according to the effect of the first occlusion. If it is too loose, it can be advanced by 1 to 2 marks based on the first clamping mark. If it is too tight, it can be retreated by 1 to 2 marks based on the first clamping mark. Moreover, the use of a bright color instead of small scale readings makes it convenient for surgeons to observe and record, making it flexible and convenient to use.

[0021] Although this disclosure has been described with respect to only a limited number of embodiments, those skilled in the art who benefit from this disclosure will understand that various other embodiments can be devised without departing from the scope of this invention. Therefore, the scope of this invention should be limited only by the appended claims.

Claims

1. A hepatic hilum occluder that is easy to observe, comprising a fixing ring (1) and a pull strap (2), characterized in that, The outer end of the fixing ring (1) is connected to a pull strap (2), and also includes a marking ring (3), a scale value (4), a blocking block (5), an elastic element (6), an anti-slip strip (7), and a limiting structure. The pull strap (2) is evenly spaced with marking rings (3) and scale values ​​(4) for observing the tightness of the liver opening. The fixing ring (1) is provided with a guide groove (10) on the side opposite to the pull strap (2). The blocking block (5) is slidably sleeved in the guide groove (10). The outer side of the fixing ring (1) is provided with a groove (11). The inner side of the groove (11) is connected to the blocking block (5) with an elastic element (6). The inner side of the blocking block (5) is spaced with anti-slip strips (7) to increase the friction coefficient of the pull strap (2) passing through the inner side of the fixing ring (1). The blocking block (5) is provided with a limiting structure for clamping the pull strap (2).

2. The hepatic hilum occluder according to claim 1, characterized in that, The limiting structure is mainly composed of a limiting rod (9) and a sliding groove (52). The outer side of the blocking block (5) is provided with a sliding groove (52), and the limiting rod (9) is slidably connected in the sliding groove (52). The outer end of the limiting rod (9) is a bent part (90) structure design.

3. A hepatic hilum blocker for easy observation according to claim 2, characterized in that, The limiting rod (9) has an n-shaped structure design.

4. A hepatic hilum occluder for easy observation according to claim 1, characterized in that, The fixing ring (1) has protrusions (8) spaced apart at both ends of its edge.

5. A hepatic hilum occluder for easy observation according to claim 1, characterized in that, The blocking block (5) has an arc-shaped part (50) structure at one end located inside the fixing ring (1), which is adapted to the outer wall contour of the pull strap (2).

6. A hepatic hilum occluder according to claim 5, characterized in that, The inner side of the arc-shaped portion (50) is provided with protruding teeth (51) for abutting against the pull strap (2).

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