Pressing hemostasis device for cardiovascular surgery in internal medicine department

Abstract

The invention provides a pressing hemostasis device for internal medicine cardiovascular surgery, which solves the problems of surgical pressing hemostasis control and the like, and comprises a plurality of pressing sheets, the pressing sheets are mutually connected through a binding belt, an independently driven belt body traction assembly is arranged between the pressing sheets and the binding belt, and the belt body traction assembly is connected with a feedback adjusting system. Pressing assemblies capable of adjusting skin contact areas are arranged on the inner sides of the pressing pieces respectively and connected with a feedback adjusting system. The device has the advantages of high pressing precision, good structural stability and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a compression hemostasis device for internal cardiovascular surgery. Background Art

[0002] Existing surgical hemostasis equipment usually adopts an inflatable or twisting structure, in which the inflatable pressing structure positions the inflatable transparent bag or balloon at the femoral artery puncture site, and fixes the plastic arch plate with a fiber band placed under the patient's buttocks. After the vascular sheath is withdrawn from the femoral artery, the transparent bag is filled with an air pump to temporarily block the blood flow, and then the pressure is gradually reduced to the point where the dorsalis pedis artery pulsation can be felt without bleeding at the puncture site. However, if the pressure is too high or the device is used for too long, it will cause local ischemia. At the same time, the manual inflation method may result in insufficient pressure and inaccurate hemostasis position.

[0003] In order to solve the deficiencies of the prior art, people have conducted long-term exploration and proposed various solutions. For example, a Chinese patent document discloses an electronic inflatable tourniquet [201822075603.4], which includes a wristband, the two ends of the wristband are fixedly connected to the same support plate, the bottom of the support plate is equipped with an air bag, the top of the support plate is fixedly equipped with an air intake square tube, the bottom of the air intake square tube is connected to the air bag, the top of the air intake square tube is provided with an inflatable pressure device, the air outlet of the inflatable pressure device is connected and fixed with the inflatable square tube, the inflatable square tube sealing sleeve is arranged on the inflatable square tube, both sides of the inflatable square tube are provided with triangular card slots, the two triangular card slots are symmetrically arranged, and the triangular card blocks are movably installed in the triangular card slots.

[0004] The above solution solves the problem of insufficient inflation pressure to a certain extent, but the solution still has many shortcomings, such as the inability to ensure the accuracy of the hemostasis point and the insufficient level of intelligent pressure regulation. Summary of the invention

[0005] The object of the present invention is to provide a compression hemostasis device for cardiovascular surgery in order to solve the above problems, which has high adjustment flexibility and accurate hemostasis points.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a pressing hemostasis device for internal cardiovascular surgery, comprising a plurality of pressing plates, which are interconnected by a tightening belt, an independently driven belt pulling assembly is arranged between the pressing plates and the tightening belt, the belt pulling assembly is connected to a feedback adjustment system, pressing assemblies with adjustable skin contact areas are respectively arranged on the inner sides of the pressing plates, and the pressing assemblies are connected to the feedback adjustment system.

[0007] In the above-mentioned pressing hemostasis device for internal cardiovascular surgery, the pressing component includes an active cavity arranged on the inner side of the pressing plate, and the active cavity is provided with active blocks arranged in a matrix manner, and a limiting component is provided between the active blocks and the active cavity. The active cavity is closed by a pressing film of elastic material and the pressing film covers the active block, and an electromagnetic driving component is provided between the active block and the active cavity.

[0008] In the above-mentioned pressing hemostasis device for internal cardiovascular surgery, the limiting assembly includes a limiting frame fixed at the bottom of the movable cavity, the limiting frame has limiting frame openings distributed in a matrix manner and corresponding one-to-one with the movable blocks, a limiting step surface is arranged between the limiting frame opening and the movable block to prevent the movable block from escaping from the limiting frame opening, and the inner side of the pressing membrane is in contact with the end of the movable block.

[0009] In the above-mentioned compression hemostasis device for internal cardiovascular surgery, the electromagnetic pushing component includes a U-shaped electromagnet fixed at the bottom of the limit frame, the movable block has a permanent magnet opposite to the U-shaped electromagnet, the U-shaped electromagnet is connected to a STM32F103 model microcontroller, the single-chip microcomputer is connected to a rectifier filter circuit through a voltage stabilizing circuit, the single-chip microcomputer is connected to the U-shaped electromagnet through a ULN2003 model driver chip, an isolation circuit is arranged between the single-chip microcomputer and the driver chip, and the U-shaped electromagnet is equipped with a protection circuit.

[0010] In the above-mentioned compression hemostasis device for internal cardiovascular surgery, the belt pulling assembly includes an adapter plate rotatably mounted on a pressing plate, a circumferential locking assembly is arranged between the adapter plate and the pressing plate, an adapter groove is opened on the adapter plate for the tightening belt to pass through, and a step-by-step pulling assembly is arranged in the adapter plate.

[0011] In the above-mentioned compression hemostasis device for internal cardiovascular surgery, the circumferential locking assembly includes a locking ring arranged between the pressing plate and the adapter plate, the surface of the locking ring is covered with an anti-slip layer, and a threaded locking member is installed between the center of the adapter plate and the pressing plate; the adapter groove is arranged symmetrically with respect to the adapter plate, and Velcro is installed on the tightening belt.

[0012] In the above-mentioned compression hemostasis device for internal cardiovascular surgery, the step-by-step pulling assembly includes pulling strips arranged in pairs in the adapter plate and the central axes of the pulling strips are parallel to each other. The ends of the pulling strips are connected to the stepping motor through a speed change gear set. A guide opening extending along the central axis and opposite to the adapter groove is opened in the middle of the pulling strip, and a clamping assembly is arranged in the guide opening.

[0013] In the above-mentioned compression hemostasis device for internal cardiovascular surgery, the clamping assembly includes a clamping strip arranged on the inner side of the guide port, the clamping strips are arranged in pairs, and clamping ports for the clamping strips to move are respectively opened on both sides of the inside of the guide port, and clamping racks are respectively connected to the ends of the clamping strips, the clamping racks are parallel to each other and meshed with clamping gears, and the clamping gears are connected to the clamping motor through a speed change gear set; a clamping protrusion is provided on the opposite side of the clamping strip.

[0014] In the above-mentioned compression hemostasis device for internal cardiovascular surgery, the feedback regulation system includes a pressure sensor arranged on the inner side of the pressing plate, the pressure sensor is connected to the AD conversion module through the amplification module and the filtering module, the AD conversion module is connected to the PID control module, and the PID control module is connected to the belt pulling component and the pressing component.

[0015] In the above-mentioned compression hemostasis device for internal cardiovascular surgery, the constriction belt is equipped with a transfer seat, the transfer seat has a constriction groove for the constriction belt to pass through, and an adsorption patch is fixed inside the transfer seat.

[0016] Compared with the existing technology, the advantages of the present invention are: the pressing plate is fixed in position by connecting with a tightening belt, and the inner pressing component cooperates with the feedback adjustment system to adjust the pressing point, thereby ensuring the accuracy of the hemostasis point; the belt pulling component can pull the tightening belt, and cooperate with the feedback adjustment system to achieve a larger range of pressure adjustment, while avoiding damage caused by excessive pressure; the pressing plate adopts a modular structure and can be combined with the tightening belt as needed to meet the needs of pressing and hemostasis fixation at different positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is a schematic structural diagram of a pressing sheet of the present invention;

[0019] Figure 3 is a structural cross-sectional view of a pressing sheet of the present invention;

[0020] Figure 4 is a partial cross-sectional view of the present invention;

[0021] Figure 5 is a partial cross-sectional view of the present invention;

[0022] Figure 6 is a partial cross-sectional view of the present invention;

[0023] Figure 7 It is a schematic structural diagram of the adapter of the present invention;

[0024] Figure 8 It is the control principle diagram of the present invention;

[0025] In the figure, a pressing sheet 1, a tightening belt 2, an adapter 21, a tightening groove 22, an adsorption patch 23, a belt pulling component 3, an adapter plate 31, an adapter groove 32, a feedback adjustment system 4, a pressure sensor 41, an amplification module 42, a filtering module 43, an AD conversion module 44, a PID control module 45, a pressing component 5, an active cavity 51, an active block 52, a pressing film 53, a limiting component 6, a limiting frame 61, a limiting frame mouth 62, a limiting step surface 63, and an electromagnetic push component 7 , U-shaped electromagnet 71, permanent magnet 72, single-chip microcomputer 73, voltage stabilizing circuit 74, rectifier and filter circuit 75, drive chip 76, isolation circuit 77, protection circuit 78, circumferential locking assembly 8, locking ring 81, anti-slip layer 82, threaded locking piece 83, Velcro 84, stepping pulling assembly 9, pulling strip 91, stepping motor 92, guide port 93, clamping strip 94, clamping port 95, clamping rack 96, clamping gear 97, clamping motor 98, clamping protrusion 99. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1-8 As shown, a compression hemostasis device for internal cardiovascular surgery includes a plurality of independent compression sheets 1, and different compression sheets 1 are fitted with different hemostasis points, wherein the compression sheets 1 are connected to each other through a tightening belt 2 to form a ring structure for limb hemostasis, or form a mesh structure to press and stop hemostasis on the trunk and other parts, and are combined according to actual needs. In order to improve the pressure regulation accuracy, an independently driven belt pulling component 3 is arranged between the compression sheet 1 and the tightening belt 2, and the belt pulling component 3 is connected to the feedback regulation system 4, and the pressure is dynamically regulated under the control of the feedback regulation system 4 to avoid ischemia caused by excessive pressure on the same part for a long time. Different from the existing airbag structure, the inner side of the compression sheet 1 in this embodiment is respectively provided with a compression component 5 with adjustable skin contact area, and the compression component 5 is connected to the feedback regulation system 4, and the compression component 5 can accurately control the local compression point to ensure the best hemostasis effect without affecting the external operation.

[0028] Specifically, in order to provide a sufficient pressing area, the pressing component 5 includes an active cavity 51 arranged on the inner side of the pressing sheet 1, and active blocks 52 are arranged in a matrix distribution in the active cavity 51. A limit component 6 is arranged between the active block 52 and the active cavity 51. The active cavity 51 is closed by a pressing film 53 made of elastic material and the pressing film 53 covers the active block 52. An electromagnetic driving component 7 is arranged between the active block 52 and the active cavity 51. The pressing sheet 1 as a whole is usually made of hard materials such as plastic. The inner pressing film 53 is pressed against the skin under the pushing action of the active block 52. The electromagnetic driving component 7 can flexibly control the ejection position and ejection amount of the active block 52, and form single-point, multi-point, and composite point positions as needed.

[0029] In depth, the limiting component 6 mainly limits the movement area of ​​the movable block 52, and specifically includes a limiting frame 61 fixed at the bottom of the movable cavity 51. The limiting frame 61 has a limiting frame opening 62 distributed in a matrix and corresponding to the movable block 52 one by one. A limiting step surface 63 is provided between the limiting frame opening 62 and the movable block 52 to prevent the movable block 52 from escaping from the limiting frame opening 62. The inner side of the pressing film 53 is in contact with the end of the movable block 52. Each movable block 52 is relatively independent, and performs telescopic movement relative to the limiting frame opening 62 under the action of the electromagnetic driving component 7. The internal limiting step surface 63 limits the maximum extension of the movable block 52 to prevent the protrusion height from being too high, resulting in excessive pressing force. The limiting frame 61 includes a variety of shapes including circular and rectangular, and the movable block 52 is not limited to a rectangular block.

[0030] Furthermore, the electromagnetic driving component 7 has high response sensitivity and adjustment accuracy, including a U-shaped electromagnet 71 fixed at the bottom of the limit frame mouth 62, the movable block 52 has a permanent magnet 72 opposite to the U-shaped electromagnet 71, the U-shaped electromagnet 71 is connected to a STM32F103 model microcontroller 73, the microcontroller 73 is connected to a rectifier and filter circuit 75 through a voltage stabilizing circuit 74, the microcontroller 73 is connected to the U-shaped electromagnet 71 through a ULN2003 model driver chip 76, an isolation circuit 77 is arranged between the microcontroller 73 and the driver chip 76, and the U-shaped electromagnet 71 is equipped with a protection circuit 78. The ULN2003 model driving chip 76 realizes the integrated control of the U-shaped electromagnet 71, and the start and stop frequency and current direction of the U-shaped electromagnet 71 are programmed and controlled as needed, so as to apply thrust or repulsion to the permanent magnet 72 at the bottom of the movable block 52. Adjacent U-shaped electromagnets 71 do not interfere with each other. When the movable block 52 is in a suspended state relative to the bottom of the limit frame 62, sufficient buffering is provided for the pressing point, thereby further improving the safety of local hemostasis.

[0031] Furthermore, each pressing plate 1 adopts a modular structure, and the belt pulling assembly 3 includes an adapter plate 31 rotatably mounted on the pressing plate 1, a circumferential locking assembly 8 is arranged between the adapter plate 31 and the pressing plate 1, and an adapter groove 32 for the tightening belt 2 to pass through is opened on the adapter plate 31, and a step-type pulling assembly 9 is arranged inside the adapter plate 31. The same adapter plate 31 can be provided with a single pair or multiple pairs of adapter grooves 32. Since the step-type pulling assembly 9 is arranged inside the adapter plate 31, it can adapt to tightening belts 2 of different lengths, and multiple tightening belts 2 connected to the same adapter plate 31 can meet the needs of complex limb fixation.

[0032] In addition, the circumferential locking assembly 8 is generally adjusted manually, including a locking ring 81 disposed between the pressing plate 1 and the adapter plate 31, the surface of the locking ring 81 is covered with an anti-skid layer 82, and a threaded locking member 83 is installed between the center of the adapter plate 31 and the pressing plate 1; the threaded locking member 83 is manually rotated, and the anti-skid layer 82 is contacted and pressed to fix the orientation angle of the tightening belt 2. The adapter groove 32 is arranged symmetrically with respect to the adapter plate 31, and a Velcro 84 is installed on the tightening belt 2. The excess tightening belt 2 is fitted and tightened by the Velcro 84 to ensure sufficient adjustment margin.

[0033] At the same time, compared with the conventional winding storage structure, the step-by-step pulling assembly 9 in this embodiment is not limited by the length of the tightening belt 2, and the step-by-step structure can provide a larger pulling torque, thereby ensuring the pressing force. It specifically includes a pair of pulling strips 91 arranged in the adapter plate 31, and the central axes of the pulling strips 91 are parallel to each other. The ends of the pulling strips 91 are connected to the stepping motor 92 through a speed change gear set. The middle part of the pulling strip 91 is provided with a guide opening 93 extending along the central axis and opposite to the adapter groove 32, and a clamping assembly is arranged in the guide opening 93. The pulling strip 91 swings alternately, and the clamping assembly therein fixes the tightening belt 2, and applies sufficient pulling torque as the pulling strip 91 rotates.

[0034] It can be seen that the clamping assembly includes a clamping strip 94 arranged inside the guide opening 93, the clamping strips 94 are arranged in pairs, and the guide opening 93 has clamping openings 95 for the clamping strips 94 to move on both sides. The ends of the clamping strips 94 are connected with clamping racks 96, which are parallel to each other and mesh with a clamping gear 97, which is connected to the clamping motor 98 through a speed change gear set; a clamping protrusion 99 is arranged on the opposite side of the clamping strip 94. The clamping motor 98 is started to drive the clamping gear 97 and the clamping rack 96 to drive, and the clamping strips 94 are moved closer or farther away from each other to clamp or separate the pulling strip 91.

[0035] Obviously, the feedback regulation system 4 uses a negative feedback regulation mechanism to maintain the pressing force within a specified range, including a pressure sensor 41 arranged on the inner side of the pressing sheet 1, the pressure sensor 41 is connected to the AD conversion module 44 through the amplification module 42 and the filter module 43, the AD conversion module 44 is connected to the PID control module 45, and the PID control module 45 is connected to the belt pulling component 3 and the pressing component 5. The PID control module 45 supports external programming, so as to flexibly adjust the drive control mode to meet the hemostasis pressing requirements in different parts and different states.

[0036] Preferably, in order to realize the combination of multiple pressing sheets 1 and tightening belts 2, the tightening belt 2 is equipped with a transfer seat 21, the transfer seat 21 has a tightening groove 22 for the tightening belt 2 to pass through, and an adsorption patch 23 is fixed inside the transfer seat 21. The adsorption patch 23 is used to fix the node to avoid excessive deviation during the pulling process.

[0037] To sum up, the principle of this embodiment is that a tightening belt 2 is connected between the pressing plates 1, and the belt pulling component 3 applies a pulling force to the tightening belt 2, thereby driving the pressing plate 1 to press and stop bleeding, wherein the pressing component 5 on the inner side of the pressing plate 1 performs fine adjustment on the pressing point, thereby improving the control accuracy of the hemostasis pressing.

[0038] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0039] Although this article makes more use of pressing sheet 1, tightening belt 2, adapter 21, tightening groove 22, adsorption patch 23, belt pulling component 3, adapter plate 31, adapter groove 32, feedback adjustment system 4, pressure sensor 41, amplification module 42, filter module 43, AD conversion module 44, PID control module 45, pressing component 5, movable cavity 51, movable block 52, pressing film 53, limiting component 6, limiting frame 61, limiting frame mouth 62, limiting step surface 63, electromagnetic pushing component 7, U-shaped electromagnet 71, permanent magnet 72, single chip microcomputer 73, voltage stabilizing circuit 74, rectifier filter circuit 75, driver chip 76, isolation circuit 77, protection circuit 78, circumferential locking assembly 8, locking ring 81, anti-slip layer 82, threaded locking member 83, Velcro 84, stepping pulling assembly 9, pulling strip 91, stepping motor 92, guide port 93, clamping strip 94, clamping port 95, clamping rack 96, clamping gear 97, clamping motor 98, clamping convex point 99 and other terms, but the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A compression hemostasis device for cardiovascular surgery, comprising a plurality of compression plates (1), wherein the compression plates (1) are connected to each other via a tightening belt (2), characterized in that: An independently driven belt pulling assembly (3) is arranged between the pressing plate (1) and the tightening belt (2), and the belt pulling assembly (3) is connected to a feedback adjustment system (4). A pressing assembly (5) capable of adjusting the skin contact area is arranged on the inner side of the pressing plate (1), and the pressing assembly (5) is connected to the feedback adjustment system (4).

2. A compression hemostasis device for cardiovascular surgery according to claim 1, characterized in that: The pressing component (5) comprises an active cavity (51) arranged on the inner side of the pressing sheet (1), wherein active blocks (52) are arranged in a matrix pattern in the active cavity (51), a limiting component (6) is arranged between the active blocks (52) and the active cavity (51), the active cavity (51) is closed by a pressing film (53) made of elastic material and the pressing film (53) covers the active block (52), and an electromagnetic driving component (7) is arranged between the active block (52) and the active cavity (51).

3. A compression hemostasis device for cardiovascular surgery according to claim 2, characterized in that: The limiting assembly (6) comprises a limiting frame (61) fixed at the bottom of the movable cavity (51); the limiting frame (61) has limiting frame openings (62) distributed in a matrix manner and corresponding one to one with the movable blocks (52); a limiting step surface (63) is provided between the limiting frame opening (62) and the movable block (52) to prevent the movable block (52) from escaping from the limiting frame opening (62); and the inner side of the pressing film (53) is in contact with the end of the movable block (52).

4. A compression hemostasis device for cardiovascular surgery according to claim 3, characterized in that: The electromagnetic driving component (7) comprises a U-shaped electromagnet (71) fixed at the bottom of the limit frame opening (62); the movable block (52) has a permanent magnet (72) opposite to the U-shaped electromagnet (71); the U-shaped electromagnet (71) is connected to a single-chip microcomputer (73) of the STM32F103 model; the single-chip microcomputer (73) is connected to a rectifier filter circuit (75) via a voltage stabilizing circuit (74); the single-chip microcomputer (73) is connected to the U-shaped electromagnet (71) via a ULN2003 model driver chip (76); an isolation circuit (77) is provided between the single-chip microcomputer (73) and the driver chip (76); and the U-shaped electromagnet (71) is equipped with a protection circuit (78).

5. The compression hemostasis device for cardiovascular surgery according to claim 1, characterized in that: The belt pulling assembly (3) includes an adapter plate (31) rotatably mounted on a pressing plate (1), a circumferential locking assembly (8) is arranged between the adapter plate (31) and the pressing plate (1), an adapter groove (32) for the tightening belt (2) to pass through is opened on the adapter plate (31), and a step-by-step pulling assembly (9) is arranged inside the adapter plate (31).

6. The compression hemostasis device for cardiovascular surgery according to claim 5, characterized in that: The circumferential locking assembly (8) includes a locking ring (81) arranged between the pressing plate (1) and the adapter plate (31), the surface of the locking ring (81) is covered with an anti-slip layer (82), and a threaded locking member (83) is installed between the center of the adapter plate (31) and the pressing plate (1); the adapter groove (32) is arranged in a centrally symmetrical manner relative to the adapter plate (31), and a Velcro (84) is installed on the tightening belt (2).

7. The compression hemostasis device for cardiovascular surgery according to claim 5, characterized in that: The step-by-step pulling assembly (9) comprises pulling strips (91) arranged in pairs in the adapter plate (31) and the central axes of the pulling strips (91) are parallel to each other. The ends of the pulling strips (91) are connected to the stepping motor (92) through a speed change gear set. A guide opening (93) extending along the central axis and opposite to the adapter groove (32) is provided in the middle of the pulling strip (91), and a clamping assembly is provided in the guide opening (93).

8. The compression hemostasis device for cardiovascular surgery according to claim 7, characterized in that: The clamping assembly comprises a clamping strip (94) arranged on the inner side of the guide opening (93), the clamping strips (94) are arranged in pairs, and clamping openings (95) for the clamping strips (94) to move are respectively opened on both sides of the guide opening (93), and clamping racks (96) are respectively connected at the ends of the clamping strips (94), and the clamping racks (96) are parallel to each other and meshed with clamping gears (97), and the clamping gears (97) are connected to the clamping motor (98) through a speed change gear set; and a clamping protrusion (99) is arranged on the opposite side of the clamping strip (94).

9. The compression hemostasis device for cardiovascular surgery according to claim 1, characterized in that: The feedback adjustment system (4) comprises a pressure sensor (41) arranged on the inner side of the pressing sheet (1); the pressure sensor (41) is connected to an AD conversion module (44) via an amplification module (42) and a filtering module (43); the AD conversion module (44) is connected to a PID control module (45); and the PID control module (45) is connected to a belt pulling component (3) and a pressing component (5).

10. The compression hemostasis device for cardiovascular surgery according to claim 1, characterized in that: The tightening belt (2) is equipped with a transfer seat (21), the transfer seat (21) is provided with a tightening groove (22) for the tightening belt (2) to pass through, and an adsorption patch (23) is fixed on the inner side of the transfer seat (21).

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