Hemostasis device
By using expandable support and agent hemostasis mode in the hemostasis device, the problem of insufficient conformity of the squeezed hemostasis device in the prior art is solved, and efficient hemostasis of multiple bleeding sites after surgery is achieved, and thermal means are avoided Damage to normal tissue.
Patent Information
- Application Number
- CN202322799702.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-18
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2033-10-18
AI Technical Summary
In the prior art, the extrusion hemostatic device does not have a high degree of conformity to the postoperative cavity, and cannot effectively squeeze the hemostatic area in different directions and areas at the same time, and thermal means may damage the surrounding normal tissue.
Design a hemostatic device that includes an expandable support. By controlling the expansion size and position of the support, inserting and rotating the catheter to fill the postoperative space, squeezing hemostatic of different orientations and areas, and enhancing the hemostatic mode of combined with the agent Effect.
The conformal squeeze hemostasis effect of the hemostasis device is improved, which can better adapt to the size and shape of the postoperative space, enhance the hemostasis effect on different directions and areas, and avoid damage to normal tissue.
Smart Images
Figure CN222237739U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a hemostatic device capable of enhancing conformal extrusion hemostatic effect. Background Art
[0002] After minimally invasive surgery, it is usually necessary to stop bleeding at the bleeding site. In the prior art, there are solutions that use thermal means to stop bleeding. For example, after removing the diseased tissue of the prostate in the treatment of prostate cancer or benign prostatic hyperplasia, laser ablation can reduce bleeding, but thermal means may damage the surrounding normal tissue. Therefore, it is desired to implement a safer means of stopping bleeding after tissue removal.
[0003] There is also a squeeze hemostasis solution in the prior art, which uses a single expandable balloon to be inserted into the postoperative cavity, inflated to expand and deform the balloon, and then compresses the bleeding site to stop bleeding. However, the single balloon does not conform to the postoperative cavity well enough, and cannot squeeze the hemostasis sites in different directions and regions at the same time.
[0004] Therefore, in the prior art, there is a technical problem of how to enhance the hemostatic effect of conformal extrusion. Utility Model Content
[0005] The purpose of the present application is to provide a hemostatic device that can enhance the conformal extrusion hemostasis effect. In order to achieve the above purpose, one scheme of the present application is a hemostatic device for performing hemostasis on a part to be hemostatic in a postoperative space formed by ablation surgery on a human cavity, the hemostatic device comprises a first catheter that can be inserted into the human cavity, the insertion and removal direction of the first catheter is the axial direction, and the direction perpendicular to the axial direction is the radial direction; the first catheter is provided with an extrusion hemostasis module, the extrusion hemostasis module comprises a first expandable support member and a second expandable support member arranged on the outer peripheral wall of the first catheter, the first expandable support member and the second expandable support member can expand to the outside of the first catheter along the radial direction after expansion, and in the working state, the first expandable support member and the second expandable support member are both located in the postoperative space; in the extrusion hemostasis mode, the first catheter is inserted and / or rotated around the axial direction, and the expansion size of at least one of the first expandable support member and the second expandable support member is controlled to fill and squeeze the postoperative space, thereby performing extrusion hemostasis on the part to be hemostatic in the postoperative space.
[0006] According to the aforementioned technical solution, a plurality of expandable support members are provided, and the expansion degree of each expandable support member is controlled separately, so that the extrusion hemostasis module can better adapt to the size and shape of the postoperative space, and simultaneously extrude the parts to be hemostatic in different directions and regions, thereby improving the conformal extrusion hemostasis effect of the hemostatic device.
[0007] In a preferred embodiment, the outer peripheral wall of the first catheter is provided with a first through hole and a second through hole respectively covered by the first expandable support member and the second expandable support member, and the first through hole and the second through hole are respectively connected to the first fluid channel and the second fluid channel; in the extrusion hemostasis mode, the first fluid channel and the second fluid channel respectively control the expansion size of the first expandable support member and the second expandable support member by adjusting the amount of the transported fluid.
[0008] According to the aforementioned technical solution, the expansion degree of each expandable support member is controlled by the amount of fluid transported through the fluid channel, and the operation is simple.
[0009] In a preferred embodiment, a second catheter is further provided, and the outer wall of the second catheter is provided with a spray hole connected to the drug delivery channel; the outer wall of the first catheter is also provided with a spray opening; in a working state, the second catheter is inserted into the first catheter so that the spray hole and the spray opening are arranged correspondingly in the postoperative space; in a drug hemostasis mode, the hemostatic agent delivered through the drug delivery channel is sprayed from the spray hole and the spray opening to the site to be hemostatic.
[0010] According to the aforementioned technical solution, in addition to hemostasis by squeezing, the hemostatic effect can also be enhanced by spraying hemostatic agent.
[0011] In a preferred embodiment, in the mixed hemostasis mode, the drug hemostasis mode and the extrusion hemostasis mode are executed sequentially.
[0012] In a preferred embodiment, the extrusion hemostasis module also includes a third expandable support member arranged on the outer wall of the first catheter, and the third expandable support member can expand along the radial direction to the outside of the first catheter after expansion, and in a working state, the third expandable support member is located in the postoperative space; wherein, the third expandable support member is located on the side of the outer wall of the first catheter where the spray opening is provided, and is separated from the spray opening by a specified interval in the axial direction; in the extrusion hemostasis mode, the first catheter is plugged in and / or rotated around the axial direction, and the expansion size of the third expandable support member is controlled, so that the third expandable support member squeezes the part to be hemostatic.
[0013] According to the above technical solution, the third expandable support member is provided to further improve the conformability and the hemostatic effect of squeezing the hemostatic parts in different directions and regions. At the same time, the third expandable support member is separated from the spray opening by a certain distance to avoid interference with the hemostatic agent sprayed at the spray hole.
[0014] In a preferred embodiment, the outer wall of the first catheter is provided with a third through hole covered by the third expandable support member, and the third through hole is connected to the third fluid channel; in the extrusion hemostasis mode, the third fluid channel controls the expansion size of the third expandable support member by adjusting the amount of the delivered fluid.
[0015] According to the aforementioned technical solution, the expansion size of the third expandable support member is controlled by the amount of fluid delivered through the third fluid channel, and the operation is simple.
[0016] In a preferred embodiment, centers of the first through hole, the second through hole, and the third through hole are located at the same position of the first conduit in the axial direction.
[0017] According to the aforementioned technical solution, the three expandable support members are distributed in sequence along the circumference of the first catheter, and the structure is compact. It is also convenient to aim at the parts to be hemostatic in different directions when squeezing hemostasis.
[0018] In a preferred embodiment, in a working state, the first fluid channel, the second fluid channel, and the third fluid channel are sandwiched between the inner wall of the first conduit and the outer wall of the second conduit.
[0019] According to the above technical solution, the inner diameter of the first conduit and the outer diameter of the second conduit are reasonably controlled so that no interference occurs between the first fluid channel, the second fluid channel, the third fluid channel and the second conduit.
[0020] In a preferred embodiment, the first catheter can pass through the postoperative space and be inserted into a limiting chamber connected to the human body cavity; the outer peripheral wall of the first catheter is provided with a fourth through hole and a fourth expandable support member covering the fourth through hole, and the fourth through hole is connected to a fourth fluid channel; after expansion, the fourth expandable support member can expand along the radial direction to the outside of the first catheter; and in a working state, the fourth expandable support member is located in the limiting chamber; during hemostasis, the fourth fluid channel controls the expansion size of the fourth expandable support member by adjusting the amount of transported fluid, so that the fourth expandable support member blocks the connecting channel between the limiting chamber and the human body cavity, and limits the first catheter in the axial direction.
[0021] According to the aforementioned technical solution, the fourth expandable support member can not only prevent the liquid in the limiting chamber from flowing into the postoperative space, but also limit and support the first catheter.
[0022] In a preferred embodiment, a drainage hole is further provided on the outer wall of the first conduit, and the drainage hole is connected to an end of the first conduit away from the first conduit via a drainage channel; in a working state, the drainage hole is located in the limiting chamber; thus, the liquid in the limiting chamber can be discharged to the outside of the first conduit through the drainage hole and the drainage channel.
[0023] According to the aforementioned technical solution, the liquid in the limiting chamber can be discharged in time.
[0024] In a preferred embodiment, the first expandable support member and the second expandable support member are elastic balloons.
[0025] According to the above technical solution, the balloon is inflated with air / water to accurately control its expanded size, and the operation is relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the present application, the drawings of the specification of the present application will be described and illustrated below. Obviously, the drawings in the following description only illustrate certain aspects of some exemplary embodiments of the present application, and it is possible for a person of ordinary skill in the art to obtain other drawings based on these drawings without creative work.
[0027] Figure 1 is a schematic axial cross-sectional view of an exemplary hemostatic device.
[0028] Figure 2 Schematic diagram of a radial cross section of an exemplary double-balloon extrusion hemostasis module.
[0029] Figure 3 Schematic diagram of a radial cross section of an exemplary three-balloon extruded hemostasis module.
[0030] Figure 4 FIG. 1 is a schematic axial cross-sectional view of an exemplary three-balloon hemostatic device.
[0031] Caption of the attached figure:
[0032] 1 First catheter
[0033] 11 Outer wall of the first conduit
[0034] 12. Squeeze hemostasis module
[0035] 121 first expandable support member
[0036] 122 second expandable support member
[0037] 123 third expandable support member
[0038] 124 First fluid channel
[0039] 125 Second fluid channel
[0040] 126 Third fluid channel
[0041] 127 Fourth fluid channel
[0042] 128 Drainage channel
[0043] 13 Spray opening
[0044] 14 Drainage holes
[0045] 2 Second catheter
[0046] 21 Spray holes
[0047] 22 Drug delivery channel
[0048] 4 Fourth expandable support member DETAILED DESCRIPTION
[0049] Various exemplary embodiments of the present application are described in detail below with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is by no means intended to limit the present application and its application or use. The present application can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present application thorough and complete and to fully express the scope of the present application to those skilled in the art. It should be noted that unless otherwise stated, the relative arrangement of the components and steps, numerical expressions, and numerical values, etc., described in these embodiments should be interpreted as being merely exemplary, rather than as limitations.
[0050] The words “include” or “comprising” and the like used in this application mean that the elements preceding the words include the elements listed after the words, and do not exclude the possibility of also including other elements.
[0051] All terms (including technical terms or scientific terms) used in this application have the same meaning as those understood by ordinary technicians in the field to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be understood to have meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined in this article.
[0052] Components not described in detail in this section, parameters such as specific models of components, relationships between components, and control circuits may be considered as technologies, methods, and equipment known to ordinary technicians in the relevant fields, but in appropriate circumstances, such technologies, methods, and equipment should be considered as part of the specification.
[0053] First catheter
[0054] The following reference Figure 1 and Figure 2 The first catheter 1 of the present application is described. Figure 1 is a schematic diagram of an axial cross section of a hemostatic device, Figure 2 It is a schematic diagram of a radial cross section of the double-balloon extrusion hemostasis module 12 .
[0055] The hemostatic device of the present application is suitable for a variety of human cavities, such as the nose, stomach, rectum, urethra, uterus, etc. For the sake of simplicity, only the prostate tissue resection surgery is used as an example for explanation. During the operation, surgical equipment such as an electric knife, a laser knife, a water knife, etc. are inserted from the urethra to ablate and remove the diseased tissue of the prostate, which will generate a postoperative space with a certain space inside the prostate, and there is a site to be hemostatic after being cut in the postoperative space.
[0056] Generally, the proximal opening of the postoperative space near the urethra can extend to the connection between the prostate and the urethra, and the distal opening can extend to the bladder neck connecting the prostate and the bladder. The size of the postoperative space depends on how much prostate tissue is cut off. During the hemostasis process, the hemostatic device enters the postoperative space through the urethra, and then stops the bleeding at the site to be hemostatic by means of drugs or squeezing.
[0057] See also Figure 1 , Figure 2 The hemostatic device comprises a first catheter 1 that can be inserted into a human body cavity. For the convenience of explanation, the insertion and removal direction of the first catheter 1 shown by the arrow in the figure is axial, and the direction perpendicular to the axial direction is radial. It can be understood that the insertion and removal direction of the first catheter 1 is the axial direction thereof.
[0058] The first catheter 1 has an opening at one end and is used to be inserted into a human body cavity at the other end, and has a first catheter peripheral wall 11 surrounding its axis, and an extrusion hemostasis module 12 disposed on the first catheter peripheral wall 11. The first catheter peripheral wall 11 is provided with a first through hole and a second through hole (not shown in the figure), and a first expandable support member 121 and a second expandable support member 122 covering the first through hole and the second through hole respectively, such as Figure 2 The first through hole and the second through hole are also connected to the first fluid channel 124 and the second fluid channel 125 respectively.
[0059] In this embodiment, the outer peripheral wall 11 of the first catheter and the first expandable support member 121 and the second expandable support member 122 are all made of silicone material, which has a certain flexibility and elasticity, so that the first catheter 1 can better adapt to the shape of the human body cavity, and also enable the first expandable support member 121 and the second expandable support member 122 to expand radially in the direction away from the axis of the first catheter 1, and after expansion, they can expand to the outside of the first catheter 1.
[0060] Normally, the first expandable support member 121 and the second expandable support member 122 are balloons, which are thinner and lighter than the first catheter peripheral wall 11. While ensuring the strength of the first catheter peripheral wall 11, the first expandable support member 121 and the second expandable support member 122 are more likely to expand and deform. It is understandable that the materials of the first catheter peripheral wall 11 and the first expandable support member 121 and the second expandable support member 122 can be different from each other, and the material is not limited to silicone, as long as it is a material with a certain degree of flexibility and elasticity. The first expandable support member 121 and the second expandable support member 122 are also not limited to balloon structures, which will not be elaborated here.
[0061] The first fluid channel 124 and the second fluid channel 125 respectively control the expansion size of the first expandable support member 121 and the second expandable support member 122 by adjusting the amount of the delivered fluid. The fluid can be gas or liquid, which is not specifically limited here.
[0062] In the working state, the first catheter 1 is inserted into the postoperative space in the prostate along the urethra, so that the first expandable support member 121 and the second expandable support member 122 are both located in the postoperative space. Then, by controlling the amount of fluid delivered by the first fluid channel 124 and the second fluid channel 125, the first expandable support member 121 and the second expandable support member 122 are respectively expanded and deformed to a certain extent, and at the same time, the first catheter 1 is inserted and pulled out along the axial direction and / or rotated around the axial direction, so that the expanded first expandable support member 121 and the second expandable support member 122 fill the postoperative space, and squeeze the hemostatic sites in different directions and regions, respectively, and achieve the hemostatic effect through squeezing, which is the squeezing hemostasis mode.
[0063] It should be noted that if there is only a single bleeding point and no multiple bleeding points after the operation, the expansion size of the single expandable support member can be controlled to fill and squeeze the postoperative space, thereby squeezing the hemostasis site. However, as a preferred solution, when there is a single bleeding point, fluid is still input into the first expandable support member 121 and the second expandable support member 122 at the same time, and the expansion sizes of the two are controlled respectively, so that one of them, for example, the first expandable support member 121 squeezes the site to be hemostatic, while the second expandable support member 122 squeezes the non-bleeding site, so that the second expandable support member 122 will apply a reverse supporting force to the first expandable support member 121, so that the first expandable support member 121 squeezes the site to be hemostatic more tightly, thereby enhancing the squeezing hemostasis effect.
[0064] In fact, when facing the situation of multi-point hemostasis, the expansion size of multiple expandable support members is controlled at the same time. While squeezing different parts to be hemostatically controlled respectively, the multiple expandable support members will also exert reverse supporting force on each other, thereby enhancing the squeezing hemostasis effect.
[0065] It can be understood that by controlling the amount of fluid transported by the first fluid channel 124 and the second fluid channel 125, the expansion degrees of the first expandable support member 121 and the second expandable support member 122 can be adjusted respectively, so that the first expandable support member 121 and the second expandable support member 122 can better conform to the size and shape of the postoperative space, and can also extrude the parts to be hemostatic in different directions and areas respectively. Compared with the design with only one expandable support member, this solution can better improve the conformality and extrusion hemostasis effect of the extrusion hemostasis module 12.
[0066] Second catheter
[0067] Next, combine Figure 1 The second conduit 2 will be described.
[0068] The hemostatic device also includes a second catheter 2, one end of which is open and the other end is used to be inserted into the inner cavity of the first catheter 1. A drug spraying hole 21 connected to a drug delivery channel 22 is provided on the outer peripheral wall of the second catheter 2. Correspondingly, a drug spraying opening 13 is also provided on the outer peripheral wall 11 of the first catheter.
[0069] In the working state, the second catheter 2 is inserted into the first catheter 1, so that the spray hole 21 and the spray opening 13 are arranged correspondingly in the postoperative space, that is, the second catheter 2 is inserted to the position where the spray hole 21 and the spray opening 13 are aligned, so as to avoid the outer peripheral wall 11 of the first catheter blocking the hemostatic agent sprayed from the spray hole 21. The hemostatic agent can be a fluid, a gel, a dry powder, or a mixture of a fluid and a dry powder, which is not specifically limited here.
[0070] The bleeding site to be stopped, i.e., the bleeding point, can be directly adjusted based on the real-time image observation of the postoperative space to adjust the relative position of the spray hole 21 and the spray opening 13, or the bleeding point can be identified or marked on the image, and the relative position of the spray hole 21 and the spray opening 13 can be adjusted by solving the spatial position relationship. The image can be an endoscopic image, an ultrasound image, an enhanced CT image, etc., which is not limited here.
[0071] At the same time, the display of the part to be hemostatic in the image can be enhanced by adjusting the settings of the imaging device. If there are fewer parts to be hemostatic, the spraying position can be adjusted more accurately. If there are more parts to be hemostatic, the appropriate spraying position can also be determined through image observation so that as many parts to be hemostatic as possible can be covered by one spray.
[0072] In addition, in order to simplify the operation process, the precise position of the part to be hemostatically controlled does not need to be pre-positioned when stopping bleeding. The spray hole 21 is extended to a position roughly corresponding to the range of the surgical incision, and the hemostatic agent is sprayed out blindly. This method requires a high level of experience and estimation from the operator, which will not be elaborated here.
[0073] After the second catheter 2 is inserted into the first catheter 1, the first fluid channel 124 and the second fluid channel 125 can be sandwiched between the inner wall of the first catheter 1 and the outer wall of the second catheter 2, as long as the inner diameter of the first catheter 1 and the outer diameter of the second catheter 2 are reasonably designed; the first fluid channel 124 and the second fluid channel 125 can also be set inside the wall of the outer peripheral wall 11 of the first catheter to avoid interference with the inserted second catheter 2, and the third fluid channel 126 described later is also the same, which will not be described in detail here. The drug delivery channel 22 is preferably located in the cavity of the second catheter 2, and is used to deliver the hemostatic agent to the drug spraying hole 21.
[0074] During the hemostasis process, the hemostatic agent transported through the drug delivery channel 22 reaches the drug spray hole 21, and is sprayed from the drug spray hole 21 and the drug spray opening 13 to the part to be hemostatic, which is the drug hemostasis mode. In addition, the drug hemostasis mode and the extrusion hemostasis mode can be executed successively, which is a mixed hemostasis mode, that is, first plug and unplug and / or rotate the first catheter 1 and the second catheter 2, align the drug spray hole 21 and the drug spray opening 13 to the part to be hemostatic, and then spray the hemostatic agent to the part to be hemostatic, and then adjust the extrusion hemostasis module 12 to the position corresponding to the part to be hemostatic, control the amount of fluid transported in the first fluid channel 124 and the second fluid channel 125, and expand the first expandable support member 121 and the second expandable support member 122 and then squeeze them to the part to be hemostatic.
[0075] The material of the second conduit 2 and the material of the first conduit 1 are preferably the same material, which is not specifically limited here.
[0076] The third expandable support member
[0077] Next, combine Figure 3 , Figure 4 The third expandable support member 123 is described in detail. Figure 3 is a schematic diagram of a radial cross section of a three-balloon extrusion hemostasis module 12, Figure 4 It is a schematic diagram of an axial cross section of a three-balloon hemostatic device.
[0078] See also Figure 3 , Figure 4 In another preferred embodiment, the extrusion hemostasis module 12 further includes a third through hole (not shown) provided on the outer peripheral wall 11 of the first catheter, and a third expandable support member 123 covering the third through hole, and the third through hole is connected to the third fluid channel 126. The material and style of the third expandable support member 123 are the same as those of the first expandable support member 121 and the second expandable support member 122, and is preferably a balloon structure, which can be expanded radially to the outside of the first catheter 1 after expansion, and will not be described in detail here.
[0079] In the working state, the first catheter 1 is inserted into the human body cavity, and the third expandable support member 123 is located in the postoperative space. In the extrusion hemostasis mode, the expansion size of the third expandable support member 123 is controlled by controlling the amount of fluid delivered by the third fluid channel 126, and the first catheter 1 is inserted and / or rotated at the same time, so that the expanded third expandable support member 123 conforms to the size of the postoperative space and squeezes the hemostasis site to be hemostatic.
[0080] like Figure 3 As shown, preferably, the centers of the first through hole, the second through hole, and the third through hole are located at the same position of the first catheter 1 in the axial direction, that is, the first expandable support member 121, the second expandable support member 122, and the third expandable support member 123 are located at the same position of the first catheter 1 in the axial direction, and are arranged in sequence along the circumference around its axis. Preferably, from the perspective of looking from the opening end of the first catheter 1 to its insertion end for inserting into the human body cavity, the first expandable support member 121 and the second expandable support member 122 are arranged along the left and right sides of the first catheter 1, and the third expandable support member 123 is arranged along the lower side of the first catheter 1, so that the three expandable support members can cover more directions and ranges.
[0081] In fact, the distribution of three or more expandable support members is not limited to this. For example, their circumferential positions and the spacing between them can be adjusted. They can also be arranged in sequence front to back in the axial direction, that is, while being distributed circumferentially, they are also arranged adjacently or spaced apart in the axial direction. It depends on the specific usage requirements and is not specifically limited here.
[0082] For simplicity, only the example of three expandable support members being located at the same axial position of the first catheter 1 is used for illustration. The three expandable support members are located at the same axial position of the first catheter 1, making the structure of the extrusion hemostasis module 12 more compact and reducing the complexity of operating the first catheter 1 during extrusion hemostasis.
[0083] In the drug hemostasis mode, the second catheter 2 is inserted into the first catheter 1, and the hemostatic agent is sprayed from the spray hole 21 and the spray opening 13 to the site to be hemostatic. In the case of three or more expandable support members, the sprayed hemostatic agent is easily interfered by the expanded expandable support member located on the same side as the spray opening 13.
[0084] Next, the example of the medicine spraying opening 13 and the third expandable support member 123 being located on the same side of the first conduit outer wall 11 is used for explanation. For example, from the perspective of looking from the opening end of the first conduit 1 to its insertion end, the medicine spraying opening 13 and the third expandable support member 123 are both located on the lower side of the first conduit 1.
[0085] In order to avoid interference with the sprayed hemostatic agent, the spray opening 13 and the third expandable support member 123 are separated by a predetermined interval in the axial direction, for example Figure 3 The spray opening 13 is shown as being further away from the opening end of the first catheter 1 than the third expandable support member 123. At this time, the extrusion hemostasis module 12 is also axially spaced apart from the spray opening 13 by a predetermined interval. Thus, in the working state, when the hemostatic agent is sprayed from the spray hole 21 and the spray opening 13, it will not be interfered by the third expandable support member 123.
[0086] Bladder limit
[0087] Next, combine Figure 1 The bladder limit is explained in detail.
[0088] See also Figure 1 The first catheter 1 can pass through the postoperative space and be inserted into a limiting chamber connected to a human body cavity. In this embodiment, the limiting chamber is a bladder, which is connected to a human body cavity at the prostate through a bladder neck, and the body fluid in the bladder easily flows into the postoperative space through the bladder neck, thereby causing unnecessary contamination.
[0089] To this end, a fourth through hole (not shown in the figure) is provided on the outer peripheral wall 11 of the first catheter, and a fourth expandable support member 4 covering the fourth through hole, the fourth expandable support member 4 is axially closer to the insertion end of the first catheter 1 relative to the extrusion hemostasis module 12, and the fourth expandable support member 4 can expand radially to the outside of the first catheter 1 after expansion. The fourth through hole is connected to the fourth fluid channel 127.
[0090] In the working state, after the first catheter 1 is inserted from the urethra, its insertion end passes through the postoperative space and enters the bladder, so that the fourth expandable support member 4 is also located in the bladder. Then, the amount of fluid delivered by the fourth fluid channel 127 is controlled to control the expansion size of the fourth expandable support member 4, and the first catheter 1 is inserted and pulled out axially, so that the fourth expandable support member 4 blocks the bladder neck to prevent the body fluid in the bladder from flowing out, and the first catheter 1 is limited in the axial direction so that the first catheter 1 cannot be further pulled out.
[0091] At the same time, after the fourth expandable support member 4 blocks the bladder neck, it also provides stable support for the first catheter 1, so that an additional supporting part is provided between the first catheter 1 and the human tissue, thereby making the first catheter 1 more stable and easier to control.
[0092] In addition, a drainage hole 14 is also provided on the outer peripheral wall 11 of the first catheter, and the drainage hole 14 is connected to the open end of the first catheter 1 via a drainage channel 128; and in the working state, the drainage hole 14 is located in the limiting chamber, i.e., the bladder, and the body fluid in the bladder can be discharged to the outside of the first catheter 1 through the drainage hole 14 and the drainage channel 128, thereby further avoiding entering the postoperative space and causing contamination.
[0093] In summary, the present application sets a plurality of expandable support members, and controls the expansion degree of each expandable support member respectively, so that the extrusion hemostasis module 12 can more easily conform to the size of the postoperative space, and can also perform extrusion hemostasis on the parts to be hemostatic in different directions and regions at the same time, thereby enhancing the conformal extrusion hemostasis effect. Combined with the design of the spray hole 21, the combination and conversion of the drug hemostasis mode and the extrusion hemostasis mode can be realized, further improving the hemostasis effect.
[0094] It should be understood that the specific embodiments described above are only used to explain the present application, and the protection scope of the present application is not limited thereto. Any technical personnel familiar with the technical field can make changes, substitutions, and combinations within the technical scope disclosed in the present application according to the technical solution and concept of the present application, which should be covered by the protection scope of the present application.
Claims
1. A hemostatic device for performing hemostatic operations on a part to be hemostatically treated in a postoperative space formed by ablation surgery on a human cavity, wherein the hemostatic device is characterized by: It comprises a first catheter that can be inserted into the human body cavity, with the insertion and removal direction of the first catheter as the axial direction and the direction perpendicular to the axial direction as the radial direction; The first catheter is provided with an extrusion hemostasis module, which includes a first expandable support member and a second expandable support member provided on the outer peripheral wall of the first catheter, the first expandable support member and the second expandable support member can expand along the radial direction to the outside of the first catheter after expansion, and in a working state, the first expandable support member and the second expandable support member are both located in the postoperative space; In the extrusion hemostasis mode, the first catheter is inserted, pulled out and / or rotated around the axis, and the expansion size of at least one of the first expandable support member and the second expandable support member is controlled to fill and squeeze the postoperative space, thereby squeezing hemostasis at the site to be hemostatic in the postoperative space.
2. The hemostatic device according to claim 1, characterized in that: The outer peripheral wall of the first conduit is provided with a first through hole and a second through hole respectively covered by the first expandable support member and the second expandable support member, and the first through hole and the second through hole are respectively connected to the first fluid channel and the second fluid channel; In the extrusion hemostasis mode, the first fluid channel and the second fluid channel control the expansion size of the first expandable support member and the second expandable support member by adjusting the amount of delivered fluid respectively.
3. The hemostatic device according to claim 2, characterized in that: A second conduit is also provided, wherein the outer peripheral wall of the second conduit is provided with a spray hole connected to the medicine delivery channel; the outer peripheral wall of the first conduit is also provided with a spray opening; In the working state, the second catheter is inserted into the first catheter, so that the spray hole and the spray opening are arranged correspondingly in the postoperative space; In the drug hemostasis mode, the hemostatic agent transported through the drug delivery channel is sprayed from the drug spray hole and the drug spray opening to the site to be hemostatic.
4. The hemostatic device according to claim 3, characterized in that: In the mixed hemostasis mode, the drug hemostasis mode and the extrusion hemostasis mode are executed successively.
5. The hemostatic device according to claim 4, characterized in that: The extrusion hemostasis module further comprises a third expandable support member disposed on the outer peripheral wall of the first catheter, the third expandable support member can expand along the radial direction to the outside of the first catheter after expansion, and in a working state, the third expandable support member is located in the postoperative space; Wherein, the third expandable support member is located on a side of the outer peripheral wall of the first conduit where the spray opening is provided, and is separated from the spray opening by a predetermined interval in the axial direction; In the extrusion hemostasis mode, the first catheter is inserted, pulled out and / or rotated around the axis, and the expansion size of the third expandable support member is controlled so that the third expandable support member squeezes the site to be hemostatic.
6. The hemostatic device according to claim 5, characterized in that: The outer peripheral wall of the first conduit is provided with a third through hole covered by the third expandable support member, and the third through hole is connected to the third fluid channel; In the squeezing hemostasis mode, the third fluid channel controls the expansion size of the third expandable support member by adjusting the amount of delivered fluid.
7. The hemostatic device according to claim 6, characterized in that: Centers of the first through hole, the second through hole, and the third through hole are located at the same position of the first conduit in the axial direction.
8. The hemostatic device according to claim 6, characterized in that: In a working state, the first fluid channel, the second fluid channel, and the third fluid channel are sandwiched between the inner wall of the first conduit and the outer wall of the second conduit.
9. The hemostatic device according to any one of claims 1 to 8, characterized in that: The first catheter can pass through the postoperative space and be inserted into a limiting chamber connected to the human body cavity; The outer peripheral wall of the first conduit is provided with a fourth through hole and a fourth expandable support member covering the fourth through hole, wherein the fourth through hole is connected to a fourth fluid channel; after the fourth expandable support member is expanded, it can expand along the radial direction to the outside of the first conduit; and in the working state, the fourth expandable support member is located in the limiting chamber; During the hemostasis process, the fourth fluid channel controls the expansion size of the fourth expandable support member by adjusting the amount of the delivered fluid, so that the fourth expandable support member blocks the connecting channel between the limiting chamber and the human body cavity, and limits the first catheter in the axial direction.
10. The hemostatic device according to claim 9, characterized in that: The outer peripheral wall of the first conduit is further provided with a drainage hole, and the drainage hole is connected to an end of the first conduit away from the first conduit via a drainage channel; in a working state, the drainage hole is located in the limiting chamber; Therefore, the liquid in the limiting chamber can be discharged to the outside of the first conduit through the drainage hole and the drainage channel.
11. The hemostatic device according to claim 1, characterized in that: The first expandable support member and the second expandable support member are elastic balloons.