Hemostatic clip adsorption flushing system

Abstract

The present invention provides a hemostatic clamp adsorption and flushing system, comprising a composite pad, a liquid guide component and a hemostatic clamp. The liquid guide component is provided with at least a flushing tube and an adsorption tube. One end of the flushing tube is close to the composite pad and is separated from the composite pad. The composite pad is provided with a multi-layer composite structure. The multi-layer composite structure includes a permeation layer provided on the outer layer and an adsorption layer provided on the inner layer. The two permeation layers seal and cover the adsorption layer at the outer edge. The hemostatic clamp is used to clamp the broken end of a blood vessel near the outer surface of any permeation layer. The permeation layer is formed with a plurality of permeation holes penetrating the permeation layer in the thickness direction of the composite pad. The adsorption layer is formed with an adsorption area and a microchannel. The wall of the microchannel is formed with a first micropore penetrating the wall, so as to enable the microchannel to be connected to the adsorption area. The permeation hole is connected to the adsorption area. One end of the adsorption tube is connected to the microchannel. The permeation hole and the first micropore are staggered. The adsorption area is made of a microporous water-absorbing material.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a hemostatic clip adsorption and flushing system. Background Art

[0002] To maintain a clear surgical field of view during microsurgery, tissue fluid, blood, and flushing fluids must be constantly removed. Traditionally, gauze or adsorption tubes have been used for adsorption removal. However, gauze has limited adsorption capacity, requiring multiple operations and easily causing displacement and vibration of the surgical field. Furthermore, adsorption tubes have excessive adsorption force, which can easily draw tiny blood vessels into the tubes, causing vascular damage.

[0003] To solve this problem, designers have tried to use adsorption pads with larger adsorption capacity. For example, patent 202320707266.4 proposes a medical negative pressure surgical pad. The flushing fluid enters the storage space of the fluid collection bag through the drainage pores of the suction pad and is discharged through the suction tube, thereby achieving continuous collection of the flushing fluid during the operation. However, the patented technical solution has the following problems: First, the patent does not record how the flushing fluid gathered in the drainage holes can flow smoothly to the accommodating space; second, the flushing fluid needs to be stored in the accommodating space first and then discharged by the suction tube, resulting in that when the instantaneous amount of flushing fluid is large, the flushing fluid in the suction pad cannot be discharged in time, thereby affecting the surgical field of view and the cleaning fluid continues to penetrate into the drainage suction hole, and the accommodating space will also affect the stability of the negative pressure, thereby causing the flushing fluid discharge rate to fluctuate and the surgical field of view observation effect to be poor; third, the accommodating space is set at the outer edge of the suction pad, resulting in the negative pressure surgical pad being larger in size and cannot be used in small space scenarios such as microsurgery; fourth, when temporary hemostasis of the blood vessel stump is required, a hemostatic clamp needs to be placed in the surgical space, affecting the surgical field of view observation effect; fifth, due to the provision of a lower connecting pad, the negative pressure surgical pad can only be used on one side, resulting in reduced convenience of use. Summary of the Invention

[0004] The invention provides a hemostatic clip adsorption and flushing system.

[0005] Specifically, the present invention is achieved through the following technical solutions:

[0006] An embodiment of the present invention provides a hemostatic clip adsorption and flushing system for use in surgical procedures to form a blood vessel stump, comprising a composite pad, a fluid guide assembly, and a hemostatic clip. The fluid guide assembly is provided with at least an irrigation tube and an adsorption tube. One end of the irrigation tube is disposed proximate to and separate from the composite pad. The composite pad is provided as a multi-layer composite structure, comprising an outer permeable layer and an inner adsorption layer. The two permeable layers seal and encapsulate the adsorption layer at their outer edges. The hemostatic clip is used to clamp the blood vessel stump near the outer surface of either permeable layer. The permeable layer is formed with a plurality of permeable holes extending through the permeable layer in the thickness direction of the composite pad. The adsorption layer is formed with an adsorption region and a microchannel. The microchannel wall is formed with a first micropore extending through the wall, adapted to connect the microchannel with the adsorption region. The permeable holes are connected to the adsorption region, and one end of the adsorption tube is connected to the microchannel. This allows tissue fluid or flushing fluid to flow through the permeable holes into the adsorption region of the adsorption pad for storage, then flow into the microchannel through the first micropore and be discharged through the adsorption tube. The permeable holes and the first micropore are arranged in an offset manner, and the adsorption region is made of a microporous water-absorbing material.

[0007] In some embodiments, an adsorption head is provided at one end of the adsorption tube, and a channel interface portion is provided at the microchannel. The adsorption head is passed through the channel interface portion, thereby communicating with the microchannel.

[0008] In some embodiments, the wall of the adsorption head is formed with second micropores penetrating the wall.

[0009] In some embodiments, the second micropores of the adsorption head and the permeation pores of the permeation layer are staggered.

[0010] In some embodiments, the microchannel includes a trunk channel and branch channels. The trunk channel extends in the same direction as the channel interface and is arranged in the middle of the adsorption layer. Multiple branch channels extend from both sides of the trunk channel to the edge of the adsorption layer.

[0011] In some embodiments, each branch channel extends linearly from both sides of the main channel to the edge of the adsorption layer. In some embodiments, the hemostatic clip is provided in a pair, and the pair of hemostatic clips is used to clamp the blood vessel stump.

[0012] In some embodiments, the permeation layers outside the two outer layers of the multi-layer composite structure are different colors.

[0013] In some embodiments, the outer surface of the permeable layer is provided with a micro-rib structure, and the micro-rib structure protrudes from the outer surface of the permeable layer.

[0014] According to an embodiment of the present invention, tissue fluid and flushing fluid penetrate into the adsorption layer through the permeation holes and are stored in the adsorption area, and are drained to the adsorption tube through the microchannel, without the need for temporary storage in the accommodation space at the outer edge, so that the size of the composite pad is miniaturized, the flushing fluid discharge rate is stable, and the tissue fluid and flushing fluid in the surgical field of view can be adsorbed and discharged in time; by arranging a hemostatic clamp outside any permeable layer of the composite pad, the blood vessel stump can be clamped near the outer surface of the permeable layer, avoiding the chaotic placement of the blood vessel stump in the surgical space that affects the observation of the surgical field of view, and the blood flowing out of the blood vessel stump can be accurately collected in the composite pad, and the double-sided permeable layer design also improves the flexibility of the hemostatic clamp adsorption and flushing system.

[0015] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0017] Figure 1 1 is a schematic diagram from a first perspective of a hemostatic clip adsorption and flushing system according to an embodiment of the present invention;

[0018] Figure 2 is a schematic diagram from a second perspective of the hemostatic clip adsorption and flushing system in one embodiment of the present invention;

[0019] Figure 3 is a cross-sectional view of a composite pad in one embodiment of the present invention;

[0020] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle;

[0021] Figure 5 is a schematic diagram of an adsorption layer in one embodiment of the present invention;

[0022] Figure 6 1 is a top view of a composite pad in one embodiment of the present invention.

[0023] Reference numerals:

[0024] 10: composite pad; 11: permeation layer; 111: permeation hole; 112: micro-rib structure; 12: adsorption layer; 121: trunk channel; 122: branch channel; 123: channel interface; 124: first micropore;

[0025] 21: Adsorption tube; 22: Flushing tube; 23: Liquid stop clamp; 24: Connector valve; 25: Adapter;

[0026] 30: Hemostatic clip. DETAILED DESCRIPTION

[0027] The present invention will now be discussed with reference to several embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present invention, rather than implying any limitation on the scope of the present invention.

[0028] As used herein, the term "including" and its variations are to be interpreted as open-ended terms meaning "including but not limited to," the terms "embodiment" and "one embodiment" are to be interpreted as "at least one embodiment," and the term "another embodiment" is to be interpreted as "at least one other embodiment." The terms "first," "second," and the like may refer to different or identical objects. The term "configured" is not limited to direct or indirect connections, nor is it limited to a specific method of connection. Other explicit and implicit definitions may be included below.

[0029] In the following description, some specific numerical values ​​or numerical ranges may be involved. It should be understood that these numerical values ​​and numerical ranges are merely exemplary, and they may be helpful in putting the idea of ​​the present invention into practice. However, the description of these examples is not intended to limit the scope of the present invention in any way. According to specific application scenarios and requirements, these numerical values ​​or numerical ranges can be set separately.

[0030] As mentioned above, the adsorption pad in the prior art has a series of problems such as unstable drainage rate, untimely drainage, oversized, and mutual interference with the hemostatic clamp. The hemostatic clamp adsorption and flushing system proposed in the embodiment of the present invention at least partially solves the above problems. Figures 1 to 6 The structure and working principle of the hemostatic clip adsorption and flushing system according to an exemplary embodiment of the present invention are described below. Figure 1 and Figure 2 As shown, the hemostatic clip adsorption and flushing system of an embodiment of the present invention generally includes a composite pad 10, a liquid guiding assembly, a hemostatic clip 30, a liquid-stopping clip 23, a connector valve 24 and a conversion connector 25, wherein the composite pad 10 is used to collect tissue fluid and flushing fluid; the liquid guiding assembly is used for the flow of tissue fluid and flushing fluid, and the liquid guiding assembly is composed of a flushing tube 22 and an adsorption tube 21, and the flushing tube 22 and the adsorption tube 21 are respectively connected to the liquid supply mechanism and the negative pressure mechanism through the distal connector valve 24, the liquid supply mechanism adds flushing fluid to the flushing tube 22, and the negative pressure mechanism provides negative pressure to the adsorption tube 21 so as to discharge the liquid in the composite pad 10 through the adsorption tube 21; the hemostatic clip 30 is used to clamp the broken end of the blood vessel near the side of the composite pad 10; the liquid-stopping clip 23 is used to temporarily turn on and off the flow of liquid in the flushing tube 22 and the adsorption tube 21; the conversion connector 25 is used to connect the adsorption tube 21 to the composite pad 10.

[0031] like Figure 3 and Figure 4As shown, an embodiment of the present invention utilizes a composite pad 10 having a multi-layer composite structure to collect tissue fluid and irrigating fluid. The multi-layer composite structure includes at least two outer permeable layers 11 and an adsorption layer 12 sandwiched between the two permeable layers 11. Each permeable layer 11 is formed with a plurality of permeable holes 111. The permeable holes 111 extend through the thickness of the composite pad 10, allowing tissue fluid and irrigating fluid on the outside of the composite pad 10 to flow into the adsorption layer 12 through the permeable holes 111.

[0032] In one embodiment, Figure 5 As shown, the shape of the penetration hole 111 can be circular. In other embodiments, the shape of the penetration hole 111 can also be any shape such as square, triangle, diamond, etc.

[0033] In one embodiment, Figure 5 As shown, the plurality of permeable holes 111 may be arranged in an array aligned horizontally and vertically, so that tissue fluid and flushing fluid can flow through the permeable holes 111 and be stored in the adsorption area.

[0034] The adsorption layer 12 of the embodiment of the present invention is formed with an adsorption area and a microchannel. The wall of the microchannel is formed with a first micropore 124 that penetrates the wall. The other area of ​​the adsorption layer 12 is defined as the adsorption area. The adsorption area has the ability to adsorb and store liquid. The first micropore 124 connects the inside and outside of the microchannel, that is, connects the microchannel with the adsorption area, so that the tissue fluid and flushing fluid that flow into the adsorption area through the permeation hole and are stored in the adsorption area are drained into the microchannel through the first micropore 124 and then discharged through the adsorption tube 21.

[0035] In one embodiment, the microchannels can be directly formed by the adsorption layer 12 through a subtractive process, or they can be defined by inserting tubing made of other materials within the adsorption layer 12. In another embodiment, the microchannels protrude from the surface of the adsorption layer 12, dividing the adsorption area into multiple sub-areas. In this configuration, due to the first micropores 124 provided on the walls of the microchannels, the tissue fluid and flushing fluid stored in each sub-area are more likely to flow into the microchannel through the first micropores 124, rather than being attracted by adjacent sub-areas and having difficulty flowing into the microchannel.

[0036] As shown above, tissue fluid and flushing fluid can flow into the microchannel through the permeation hole 111. To this end, the embodiment of the present invention adjusts the position of the first micropore 124 on the wall of the microchannel, or adjusts the position of the permeation hole 111 on the permeation layer 11 to ensure that the permeation hole 111 and the first micropore 124 are staggered, thereby avoiding conduction between the adsorption tube, the microchannel, the first micropore 124, and the permeation hole 111. Such conduction will generate air vibration noise due to air being discharged directly through the microchannel through the permeation hole, and can also ensure that tissue fluid and flushing fluid can flow directly into the adsorption area through the permeation hole 111 and be stored. On the one hand, it improves the storage capacity of the adsorption layer, and on the other hand, it also achieves a filtering effect through the adsorption area.

[0037] In one embodiment, the adsorption layer 12 is made of a microporous water-absorbing material. The microporous structure of the water-absorbing material is utilized to accommodate liquid, thereby providing the adsorption region with adsorption capacity and storing tissue fluid and irrigating fluid. For example, the microporous water-absorbing material may be a sponge. In another embodiment, the permeable layer 11 is made of silica gel. This allows tissue fluid and irrigating fluid to flow into the adsorption layer 12 only through the permeable pores 111, while preventing the infiltration of tissue fluid and irrigating fluid into other regions of the permeable layer 11.

[0038] In one embodiment, the two permeable layers 11 seal and cover the adsorption layer 12 at the outer edge. Figure 3 and Figure 4 As shown, such an arrangement enables the tissue fluid and flushing fluid stored in the adsorption region of the adsorption layer 12 to be sealed at the edge, thereby preventing leakage of the composite pad 10 from the edge.

[0039] In one embodiment, the microchannel includes a channel interface portion 123, a main channel 121 and a branch channel 122. The channel interface portion 123 is used to connect to one end of the adsorption tube 21, thereby realizing conduction between the adsorption tube 21 and the microchannel; the main channel 121 continues to extend in the adsorption pad in a consistent manner along the extension direction of the channel interface portion 123, thereby reducing the flow resistance of tissue fluid and flushing fluid between the main channel 121 and the channel interface portion 123, making the process of tissue fluid and flushing fluid being discharged from the channel interface portion 123 smoother; the branch channels 122 extend from both sides of the main channel 121 to the edge of the adsorption layer 12, so that the branch channels 122 can cover the entire adsorption area, ensuring that the tissue fluid and flushing fluid stored in any adsorption area can be absorbed into the microchannel.

[0040] In one embodiment, the main channel 121 is arranged in the middle area of ​​the adsorption layer 12, so that the adsorption areas on both sides of the main channel 121 are symmetrical. In this way, the branch channels 122 on both sides of the main channel 121 can also be arranged to be completely symmetrical relative to the main channel 121, ensuring that the tissue fluid and flushing fluid stored in all adsorption areas can obtain balanced adsorption force from the microchannels.

[0041] In one embodiment, Figure 5 As shown, the branch channels 122 may extend in a straight line, allowing tissue fluid and flushing fluid at the edge of the adsorption area to flow through the branch channels 122 to the main channel 121 in the shortest possible distance. In another embodiment, the branch channels 122 may also extend in an arc or curve. Since multiple first micropores 124 are provided through the wall of the branch channels 122, the arc or curve can cover more adsorption area, further ensuring that the tissue fluid and flushing fluid accumulated in the adsorption area are fully absorbed into the microchannel and discharged.

[0042] In one embodiment, an adsorption head (not shown) is provided at one end of the adsorption tube 21. The adsorption head can be inserted into the channel interface portion 123, thereby improving the sealing between the adsorption tube 21 and the microchannel. Exemplarily, the end of the adsorption head has an opening, through which tissue fluid and flushing fluid flow into the adsorption tube 21. In another example, a second micropore is formed on the wall of the adsorption head, extending through the wall. When the adsorption head is inserted into the channel interface portion 123, tissue fluid and flushing fluid in the microchannel can also flow into the adsorption tube 21 through the second micropore, thereby improving the instantaneous flow rate of tissue fluid and flushing fluid between the microchannel and the adsorption tube 21.

[0043] In one embodiment, the second micropores and the permeable holes 111 of the permeable layer 11 are staggered, which prevents the second micropores from being connected to the permeable holes 111, thereby preventing the air from directly entering the adsorption head through the permeable holes 111 and the second micropores and being discharged to generate air vibration noise.

[0044] In one embodiment, a hemostatic clip 30 is disposed near the outside of any permeable layer 11 of the composite pad 10. The hemostatic clip 30 is used in conjunction with the composite pad 10. When the composite pad 10 is placed with any permeable layer 11 facing upward, the hemostatic clip 30 is positioned close to the outside of the permeable layer 11, thereby clamping the blood vessel stump near the outside of the permeable layer 11. This prevents the blood vessel stump from freely moving and interfering with the surgical field of view, while also ensuring that all blood exuded from the blood vessel stump can penetrate the composite pad 10. For example, only one hemostatic clip 30 may be provided, or two or more hemostatic clips 30 may be provided. The provision of more hemostatic clips 30 can ensure stable clamping of the blood vessel stump.

[0045] In one embodiment, the two outer permeable layers 11 are configured to have different colors to distinguish between different scenarios for venous anastomosis and arterial anastomosis. For example, the two permeable layers 11 are yellow and blue, respectively. During venous anastomosis, the yellow permeable layer 11 faces upward, while during arterial anastomosis, the blue permeable layer 11 faces upward. The colors of the permeable layers 11 create a strong visual contrast with the surrounding tissue, providing a clearer field of view during surgery. In another embodiment, the color of the hemostatic clip 30 is configured to match the color of the corresponding permeable layer 11, further enhancing visual contrast.

[0046] In one embodiment, the adsorption tube 21 and the irrigation tube 22 are provided with liquid stop clamps 23, which facilitate the on-off operation of the liquid flow in the adsorption tube 21 and the irrigation tube 22. In another embodiment, the adsorption tube 21 and the irrigation tube 22 are connected to the composite pad 10 at one end via a conversion joint 25 to ensure the stability of the connection. In another embodiment, the irrigation tube 22 extends a distance from the conversion joint 25, so that the free end of the irrigation tube 22 is located near the composite pad 10 but separated from the composite pad 10. This ensures that the irrigation liquid flowing out of one end of the irrigation tube 22 can be received and collected by the composite pad 10 after irrigating the tissue.

[0047] In one embodiment, Figure 6 As shown, the surface of the permeable layer 11 is also provided with a micro-rib structure 112. When the broken end of the blood vessel is clamped by the hemostatic clamp 30, the micro-rib structure can isolate a gap between the blood vessel and the surface of the permeable layer 11, making it convenient for the operator to use the gap to measure the diameter of the blood vessel. At the same time, it can also reduce the adsorption tension between the blood vessel and the surface of the permeable layer 11, especially in blood vessel suturing surgery, which helps the blood vessel suturing operation.

[0048] In one embodiment, a joint valve 24 is further provided at the other end of the adsorption tube 21 and the flushing tube 22 , and the adsorption tube 21 is connected to the negative pressure mechanism, and the flushing tube 22 is connected to the liquid supply mechanism through the joint valve 24 .

[0049] When using the hemostatic clip adsorption and flushing system according to the embodiment of the present invention, tissue fluid (including blood) generated during surgery can flow through the permeable hole 111 into the adsorption area of ​​the adsorption pad for storage. During postoperative flushing, flushing fluid flowing from the free end of the flushing tube 22, mixed with tissue fluid, flows through the permeable hole 111 into the adsorption area of ​​the adsorption pad for storage. Simultaneously, or after a period of time, the negative pressure mechanism is activated, and the tissue fluid and flushing fluid stored in the adsorption area flow into the microchannel through the first micropore 124 and are discharged through the adsorption tube 21 along with the tissue fluid and flushing fluid in the microchannel. Simultaneously, the hemostatic clip 30 can also temporarily clamp the blood vessel stump against the outside of the permeable layer 11. The hemostatic clip adsorption and flushing system according to the embodiment of the present invention integrates the three functions of adsorption, hemostasis, and flushing into a single device, simplifying operation, improving surgical efficiency, and offering excellent flexibility and applicability.

[0050] The description of the embodiments herein and any references to directions and orientations are for ease of description only and are not to be construed as limiting the scope of the present invention. The description of the preferred embodiments may involve combinations of features, which may exist independently or in combination. The present invention is not specifically limited to the preferred embodiments. The scope of the present invention is defined by the claims.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hemostatic clip adsorption and flushing system for use in surgical procedures to form vascular stumps, characterized in that: The invention comprises a composite pad, a liquid guiding component and a hemostatic clamp. The liquid guiding component is provided with at least an irrigation tube and an adsorption tube. One end of the irrigation tube is arranged close to the composite pad and separated from the composite pad. The composite pad is arranged as a multi-layer composite structure. The multi-layer composite structure includes a permeation layer arranged on the outer layer and an adsorption layer arranged on the inner layer. The two permeation layers seal and cover the adsorption layer at the outer edge. The hemostatic clamp is used to clamp the broken end of the blood vessel near the outer surface of any permeation layer. The permeation layer is formed with a plurality of permeation holes penetrating the permeation layer in the thickness direction of the composite pad. The adsorption layer is formed with an adsorption area and a microchannel. The wall of the microchannel is formed with a first micropore penetrating the wall, so as to make the microchannel and the adsorption area conductive. The permeation hole is conductive with the adsorption area. One end of the adsorption tube is conductive with the microchannel, so that tissue fluid or irrigation fluid can flow into the adsorption area of ​​the adsorption pad through the permeation hole for storage, and then flow into the microchannel through the first micropore and be discharged through the adsorption tube. The permeation hole and the first micropore are staggered, and the adsorption area is made of microporous water-absorbing material.

2. The hemostatic clip adsorption and flushing system according to claim 1, characterized in that: An adsorption head is provided at one end of the adsorption tube, and a channel interface portion is provided in the microchannel. The adsorption head is passed through the channel interface portion, thereby being communicated with the microchannel.

3. The hemostatic clip adsorption and flushing system according to claim 2, characterized in that: The wall of the adsorption head is formed with second micropores penetrating the wall.

4. The hemostatic clip adsorption and flushing system according to claim 3, characterized in that: The second micropores of the adsorption head and the permeation pores of the permeation layer are arranged in a staggered manner.

5. The hemostatic clip adsorption and flushing system according to claim 2, characterized in that: The microchannel includes a trunk channel and branch channels. The trunk channel extends in the same direction as the channel interface and is arranged in the middle of the adsorption layer. Multiple branch channels extend from both sides of the trunk channel to the edge of the adsorption layer.

6. The hemostatic clip adsorption and flushing system according to claim 5, characterized in that: Each branch channel extends in a straight line from both sides of the main channel to the edge of the adsorption layer.

7. The hemostatic clip adsorption and flushing system according to claim 1, characterized in that: The hemostatic clips are provided in a pair, and the pair of hemostatic clips are used to clamp the broken ends of the blood vessels together.

8. The hemostatic clip adsorption and flushing system according to claim 1, characterized in that: The permeation layers outside the two outer layers of the multi-layer composite structure are different in color.

9. The hemostatic clip adsorption and flushing system according to claim 1, characterized in that: The outer surface of the permeable layer is provided with a micro-rib structure, and the micro-rib structure protrudes from the outer surface of the permeable layer.

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