Puncture point pressurization hemostasis device
By designing a pressure hemostasis device at the puncture point, rapid hemostasis is achieved through the linkage structure of the shell and the hemostasis frame, which solves the problem that existing devices are not convenient for rapid hemostasis after puncture, and improves hemostasis efficiency and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- THE FIRST AFFILIATED HOSPITAL OF ARMY MEDICAL UNIV
- Filing Date
- 2023-07-31
- Publication Date
- 2026-04-14
AI Technical Summary
Existing puncture hemostasis devices are not convenient for quick hemostasis after puncture, resulting in a long interval between puncture and hemostasis, and are prone to blood leakage.
A puncture point pressure hemostasis device was designed, including a housing, a mounting frame, a fixed housing, a hemostasis frame, and a locking mechanism. Rapid hemostasis is achieved by rotating the fixed housing and sliding the hemostasis frame, and the stability of the device during the hemostasis process is ensured by a linkage component.
It enables rapid hemostasis after puncture, reduces blood loss, improves the efficiency and stability of hemostasis, and lowers the cost of use.
Smart Images

Figure CN116831687B_ABST
Abstract
Description
Technical Field
[0001] This invention specifically relates to a device for applying pressure to stop bleeding at the puncture point. Background Technology
[0002] In recent years, interventional vascular therapy has developed rapidly due to its advantages such as being minimally invasive, fast, safe, and effective, becoming one of the relatively mature and representative techniques in interventional therapy. Femoral artery puncture is a common approach in interventional diagnosis and treatment. Methods for hemostasis at the puncture site after femoral artery intervention include manual compression hemostasis, mechanical compression hemostasis, and vascular closure device hemostasis. When performing mechanical compression hemostasis, a specialized hemostatic device is required for assistance.
[0003] For example, Chinese invention patent application number 202211246169.6 provides a puncture compression hemostat. This hemostat allows for convenient adjustment of the compression pressure via a screw rotation mechanism. Simultaneously, the hemostatic gauze can be replaced as the main screw rotates, and a compression fixing device allows for fixation at different puncture sites. This solves the problems of high workload, difficulty in controlling the compression pressure, and the inconvenience of changing the hemostatic gauze and easy displacement of the compression site when using auxiliary devices for hemostasis.
[0004] However, existing puncture hemostasis devices require cumbersome procedures after puncture, making it inconvenient to quickly stop bleeding after puncture. This results in a long interval between puncture and hemostasis, and a significant amount of blood still flows from the puncture site. Summary of the Invention
[0005] To address the shortcomings of existing technologies, this invention proposes a puncture point pressure hemostasis device to solve the technical problem mentioned in the background art that existing puncture hemostasis devices are inconvenient for rapid hemostasis after puncture.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a puncture point pressure hemostasis device, comprising:
[0007] The housing has through slots at both ends, and fixing straps are inserted through the two sets of through slots;
[0008] A mounting frame is disposed within the housing, and the mounting frame is a hollow structure.
[0009] The fixed shell is hinged to the mounting frame at one end and has a locking shell at the other end. The fixed shell is a hollow structure.
[0010] A hemostatic frame is slidably disposed within the fixed housing along the through direction of the fixed housing, and a hemostatic cotton block is disposed at the bottom of the hemostatic frame; and
[0011] A locking mechanism is provided inside the locking housing to fix or release the position of the rotated fixed housing and the slidable hemostat.
[0012] Furthermore, the bottom of the hemostatic frame is provided with an installation hole, and the hemostatic cotton block is provided with an installation post, which passes through the installation hole and is press-fitted with it.
[0013] Furthermore, a flexible plate is provided at the bottom of the housing, and an anti-pressure sore pad is provided at the bottom of the flexible plate.
[0014] Furthermore, the locking mechanism includes:
[0015] The mounting rod is slidably disposed within the locking housing along its axis, and a baffle is provided on the mounting rod;
[0016] A first elastic element is disposed between the baffle and the locking housing;
[0017] The control block is mounted on the mounting rod;
[0018] A first locking assembly is disposed on the fixed housing and connected to the hemostat and the mounting rod. During sliding, the mounting rod uses the first locking assembly to fix or release the position of the hemostat.
[0019] The second locking component is disposed on the locking shell and connected to the mounting frame and the mounting rod. During the sliding process, the mounting rod fixes or releases the position of the fixing shell through the second locking component.
[0020] Furthermore, the first locking component includes:
[0021] The first wedge-shaped block is slidably disposed on the fixed shell, with one end extending into the fixed shell;
[0022] The first connecting rod has one end hinged to the first wedge block and the other end hinged to the mounting rod; and
[0023] A ratchet rack is provided on the hemostat, and the wedge-shaped end of the first wedge block is engaged with the ratchet rack.
[0024] Furthermore, a positioning post is provided inside the fixed shell, and a positioning hole is provided on the hemostat. The hemostat is slidably fitted onto the positioning post along the axis of the positioning post through the positioning hole.
[0025] Furthermore, a second elastic element is sleeved on the positioning post, and the two ends of the second elastic element are in contact with the hemostatic frame and the bottom surface of the fixing shell, respectively.
[0026] Furthermore, the second locking component includes:
[0027] A second wedge block is slidably mounted on the locking housing, with one end penetrating the locking housing and extending outwards. A fixing groove is provided on the mounting frame, and one end of the second wedge block is engaged within the fixing groove.
[0028] The second connecting rod is hinged at one end to the second wedge block and at the other end to the mounting rod.
[0029] Furthermore, both ends of the housing are provided with a first winding shaft and a second winding shaft that can rotate along their axes. One end of each of the two sets of fixing straps is fixed to the first winding shaft and the second winding shaft, respectively. A linkage component is provided inside the housing. During the rotation of the fixing housing along its hinge point with the mounting frame, the linkage component drives the first winding shaft and the second winding shaft to rotate, thereby tightening the two sets of fixing straps.
[0030] Furthermore, the linkage component includes:
[0031] The first synchronous pulley is located at the hinge point between the fixed shell and the mounting frame;
[0032] The second synchronous pulley is mounted on and coaxially connected to the first winding shaft, and the first synchronous pulley and the second synchronous pulley are connected by a first synchronous belt;
[0033] The third synchronous pulley is mounted on and coaxially connected to the second synchronous pulley; and
[0034] The fourth synchronous pulley is mounted on and coaxially connected to the second winding shaft, and the third synchronous pulley is connected to the fourth synchronous pulley via a second synchronous belt.
[0035] Compared with the prior art, the present invention has the following beneficial effects:
[0036] 1. When using this hemostatic device, it is fixed to the puncture site by two sets of fixing straps. In the initial state, the fixing shell is open, and puncture can be performed through the hollow area of the mounting frame. After puncture, the fixing shell is rotated along its hinge point with the mounting frame, and the hemostatic frame is pressed to move the hemostatic cotton block down, so that the hemostatic cotton block contacts the puncture site. The locking mechanism fixes the position of the rotated fixing shell and the slid hemostatic frame, so that hemostasis can be quickly achieved at the puncture site after puncture, without the need for cumbersome hemostasis work. This effectively avoids blood leakage caused by too long an interval between puncture and hemostasis, and also makes it easier to release the hemostasis.
[0037] 2. During the hemostasis process, the rotating fixed shell of this hemostatic device drives the first synchronous pulley to rotate. The first synchronous pulley, in turn, controls the rotation of the second and third synchronous pulleys via the first synchronous belt, thereby driving the first winding shaft to rotate. The first winding shaft, in turn, drives the second winding shaft to rotate through the cooperation of the third, fourth, and second synchronous pulleys and the second synchronous belt. This, in turn, winds up the two sets of fixing belts, ensuring that the hemostatic device is more stably fixed to the hemostatic area during the hemostasis process, preventing it from slipping and falling off the body, and improving stability during hemostasis. Attached Figure Description
[0038] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.
[0039] Figure 1 This is a three-dimensional structural diagram of a puncture point pressure hemostasis device provided by the present invention;
[0040] Figure 2 This is a schematic diagram of the overhead side structure of a puncture point pressure hemostasis device according to the present invention;
[0041] Figure 3 This is a schematic diagram of the shell structure in the puncture point pressure hemostasis device of the present invention;
[0042] Figure 4 This is a schematic diagram of the internal structure of the shell in the puncture point pressure hemostasis device of the present invention;
[0043] Figure 5 This is a schematic diagram of the hemostatic frame in a puncture point pressure hemostasis device of the present invention;
[0044] Figure 6 This is a schematic diagram of the internal structure of the fixing shell in a puncture point pressure hemostasis device of the present invention;
[0045] Figure 7 This is a schematic diagram of the locking mechanism in a puncture point pressure hemostasis device of the present invention.
[0046] Figure label:
[0047] 101. Housing; 102. Mounting frame; 103. Fixing groove; 104. Through groove; 105. Flexible plate; 106. Pressure ulcer prevention pad;
[0048] 201. Fixed housing; 202. Positioning pin; 203. First synchronous pulley; 204. Locking housing; 205. Second elastic element;
[0049] 301. First winding shaft; 302. Second synchronous pulley; 303. First synchronous belt; 304. Third synchronous pulley;
[0050] 401. Second winding shaft; 402. Fourth synchronous pulley; 403. Second synchronous belt; 404. Fixed belt;
[0051] 501. Hemostatic frame; 502. Positioning hole; 503. Ratchet; 504. Hemostatic cotton block; 505. Mounting post; 506. Mounting hole;
[0052] 601. Mounting rod; 602. Baffle; 603. First elastic element; 604. Control block; 605. First wedge block; 606. Second wedge block; 607. First connecting rod; 608. Second connecting rod. Detailed Implementation
[0053] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.
[0054] Example:
[0055] like Figure 1 , 3 As shown, the present invention provides a puncture point pressure hemostasis device, including a housing 101. Both ends of the housing 101 are provided with through grooves 104, and fixing straps 404 are inserted into the two sets of through grooves 104. During use, the device can be fixed to the puncture area by the two sets of fixing straps 404. It can be understood that one end of the two sets of fixing straps 404 can be fixed in the form of Velcro or buckles. A flexible plate 105 is provided at the bottom of the housing 101, and an anti-pressure ulcer pad 106 is provided at the bottom of the flexible plate 105. The anti-pressure ulcer pad 106 can effectively prevent pressure ulcers from being caused when the device is fixed to the patient's body surface for a long time, thereby improving the patient's comfort.
[0056] like Figure 1 , 2 As shown in Figures 3 and 4, in this embodiment, a mounting frame 102 is provided inside the housing 101. The mounting frame 102 is a hollow structure. A fixing shell 201 is provided inside the mounting frame 102. One end of the fixing shell 201 is hinged to the mounting frame 102, and a locking shell 204 is provided at the other end. The fixing shell 201 is a hollow structure. A hemostatic frame 501 is slidably provided inside the fixing shell 201 along its through direction. A hemostatic cotton block 504 is provided at the bottom of the hemostatic frame 501.
[0057] In the initial state, the fixing shell 201 is in the open state, and puncture can be performed through the hollow area of the mounting frame 102. After puncture, the fixing shell 201 is rotated along its hinge point with the mounting frame 102, thereby driving the hemostat 501 to rotate until the fixing shell 201 is completely retracted into the mounting frame 102, and the hemostatic cotton block 504 at the bottom of the hemostat 501 comes into contact with the puncture point, quickly completing the hemostasis work, greatly reducing the interval time between hemostasis and puncture, and effectively preventing excessive blood loss.
[0058] like Figure 5 As shown, in this embodiment, the hemostatic frame 501 has a mounting hole 506 at its bottom, and a mounting post 505 is provided on the hemostatic cotton block 504. The mounting post 505 passes through the mounting hole 506 and is press-fitted to it. The hemostatic cotton block 504 can be replaced after use. When replacing it, simply pass the mounting post 505 back through the mounting hole 506, making the hemostatic device reusable and reducing the cost of using the hemostatic device.
[0059] like Figure 1 , 6 As shown in Figure 7, in this embodiment, a locking mechanism is provided inside the locking housing 204. The locking mechanism fixes or releases the positions of the rotated fixed housing 201 and the slidable hemostat 501. The locking mechanism includes a mounting rod 601 slidably disposed inside the locking housing 204 along its axis. A baffle 602 is provided on the mounting rod 601. A first elastic element 603 is provided between the baffle 602 and the locking housing 204. A control block 604 is also provided on the mounting rod 601.
[0060] The mounting rod 601 can be slid along its axis within the locking housing 204 by moving the control block 604. During the sliding process, the mounting rod 601 is squeezed by the baffle 602 against the first elastic element 603. After the control block 604 is released, the mounting rod 601 can be reset under the action of the first elastic element 603.
[0061] like Figure 5 , 6 As shown in Figure 7, in this embodiment, the locking mechanism further includes a first locking component disposed on the fixed housing 201 and connected to the hemostat 501 and the mounting rod 601. During the sliding process, the mounting rod 601 fixes or releases the position of the hemostat 501 through the first locking component. The first locking component includes a first wedge block 605 slidably disposed on the fixed housing 201. One end of the first wedge block 605 extends into the fixed housing 201. One end of the first connecting rod 607 is hinged to the first wedge block 605, and the other end is hinged to the mounting rod 601. A ratchet rack 503 is disposed on the hemostat 501, and the wedge-shaped end of the first wedge block 605 is engaged with the ratchet rack 503.
[0062] During the closing of the fixed housing 201, the hemostat 501 can be pressed simultaneously. As the hemostat 501 moves downward, the inclined surface of the ratchet 503 pushes the first wedge block 605 to slide on the fixed housing 201. With the reset capability of the mounting rod 601, the first wedge block 605 is always locked on the ratchet 503, thereby fixing the position of the hemostat 501. This allows the height of the hemostat 501 to be adjusted during hemostasis at the puncture point, thereby adjusting the hemostatic force.
[0063] like Figure 4 , 5 As shown in Figure 6, in this embodiment, a positioning post 202 is provided inside the fixed shell 201, and a positioning hole 502 is provided on the hemostat 501. The hemostat 501 is slidably sleeved on the positioning post 202 along the axis of the positioning post 202 through the positioning hole 502. A second elastic member 205 is sleeved on the positioning post 202, and the two ends of the second elastic member 205 are in contact with the bottom surface of the hemostat 501 and the fixed shell 201, respectively.
[0064] The movement of the hemostat 501 is limited by the cooperation of the positioning post 202 and the positioning hole 502 to prevent the hemostat 501 from shifting. After hemostasis is completed, the control block 604 is moved to drive the mounting rod 601 to slide, thereby driving the first wedge block 605 to slide away from the ratchet rack 503 through the first connecting rod 607. Under the action of the second elastic element 205, the hemostat 501 can be controlled to move upward, thereby releasing the hemostatic cotton block 504 from the puncture point.
[0065] like Figure 3 , 6 As shown in Figure 7, in this embodiment, the locking mechanism further includes a second locking assembly disposed on the locking housing 204 and connected to the mounting frame 102 and the mounting rod 601. During the sliding process, the mounting rod 601 fixes or releases the position of the locking housing 201 through the second locking assembly. The second locking assembly includes a second wedge block 606 slidably disposed on the locking housing 204. One end of the second wedge block 606 penetrates through the locking housing 204 and extends outward. A fixing groove 103 is provided on the mounting frame 102. One end of the second wedge block 606 is engaged in the fixing groove 103. One end of the second connecting rod 608 is hinged to the second wedge block 606, and the other end is hinged to the mounting rod 601.
[0066] During the closing of the fixed shell 201, the second wedge block 606 is pushed up by the edge of the mounting frame 102 and slid up. After the fixed shell 201 is completely closed, the second wedge block 606 is locked in the fixed groove 103 by the reset capability of the mounting rod 601, thus fixing the position of the fixed shell 201. The locking mechanism can adjust the pressure of the hemostatic cotton block 504 while fixing the fixed shell 201, effectively reducing the time required for hemostasis and improving the efficiency of hemostasis.
[0067] like Figure 3 , 4 As shown, in this embodiment, both ends of the housing 101 are provided with a first winding shaft 301 and a second winding shaft 401 that can rotate along their axes. One end of each of the two sets of fixing belts 404 is fixed to the first winding shaft 301 and the second winding shaft 401, respectively. A linkage assembly is provided inside the housing 101. During the rotation of the fixed housing 201 along its hinge point with the mounting frame 102, the linkage assembly drives the first winding shaft 301 and the second winding shaft 401 to rotate, thereby tightening the two sets of fixing belts 404. The linkage assembly includes a first synchronous wheel 203 located at the hinge point between the fixed housing 201 and the mounting frame 102 and a second synchronous wheel 302 located on the first winding shaft 301 and coaxially connected to it. The first synchronous wheel 203 and the second synchronous wheel 302 are connected by a first synchronous belt 303. During the rotation of the fixed shell 201, the first synchronous pulley 203 is driven to rotate, and the second synchronous pulley 302 is driven to rotate through the first synchronous belt 303. During the rotation of the second synchronous pulley 302, the first winding shaft 301 is driven to tighten one of the fixed belts 404.
[0068] A third synchronous pulley 304 is coaxially connected to the second synchronous pulley 302, and a fourth synchronous pulley 402 is coaxially connected to the second winding shaft 401. The third synchronous pulley 304 and the fourth synchronous pulley 402 are connected by a second synchronous belt 403. During rotation, the first winding shaft 301 drives the third synchronous pulley 304 to rotate, which in turn drives the fourth synchronous pulley 402 to rotate via the second synchronous belt 403. This rotation of the second winding shaft 401 tightens the other set of fixing belts 404, allowing both sets of fixing belts 404 to be tightened simultaneously during the closing of the fixing housing 201, effectively preventing displacement or detachment of the hemostatic device during hemostasis.
[0069] Specific usage and beneficial effects of the present invention:
[0070] In use, the hemostatic device is fixed to the puncture site by two sets of fixing straps 404. Initially, the fixing shell 201 is open, allowing puncture to be performed through the hollow area of the mounting frame 102. After puncture, the fixing shell 201 is rotated along its hinge point with the mounting frame 102, and the hemostatic frame 501 is pressed, causing the hemostatic cotton block 504 to move downwards, making the hemostatic cotton block 504 contact the puncture site. During the rotation, the fixing shell 201 pushes the second wedge block 606 to slide and retract through the edge of the mounting frame 102, and during the pressing of the hemostatic frame 501, the first wedge block 606 is moved by the ratchet rack 503. 05. When the fixed shell 201 is closed and the hemostat 501 is pressed to the appropriate height, the first elastic element 603 controls the installation rod 601 to reset, so that the first wedge block 605 and the second wedge block 606 are reset under the action of the first connecting rod 607 and the second connecting rod 608. With the cooperation of the ratchet rack 503 and the fixing groove 103, the position of the hemostat 501 and the fixed shell 201 is quickly fixed, so that the hemostat can be quickly stopped after puncture, without the need for cumbersome hemostasis work, effectively avoiding the blood flow caused by the long interval between puncture and hemostasis, and it is also more convenient to release the hemostasis.
[0071] During the hemostasis process, the rotating fixed shell 201 drives the first synchronous pulley 203 to rotate. The first synchronous pulley 203, in turn, controls the rotation of the second synchronous pulley 302 and the third synchronous pulley 304 via the first synchronous belt 303. This, in turn, drives the first winding shaft 301 to rotate. The first winding shaft 301, in turn, drives the second winding shaft 401 to rotate through the cooperation of the third synchronous pulley 304, the fourth synchronous pulley 402, and the second synchronous belt 403. The first and second winding shafts then wind up the two sets of fixing belts 404, ensuring the hemostasis device is more stably fixed to the hemostasis area, preventing it from slipping and falling off the body during hemostasis, and improving stability during the hemostasis process.
[0072] The foregoing has shown and described the basic principles and main features of the present invention and its advantages. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments.
Claims
1. A device for applying pressure to the puncture point for hemostasis, characterized in that, Including: The housing (101) has through slots (104) at both ends, and fixing straps (404) are inserted in the two sets of through slots (104). The mounting frame (102) is disposed inside the housing (101), and the mounting frame (102) is a hollow structure; The fixed shell (201) is hinged at one end to the mounting frame (102) and a locking shell (204) is provided at the other end. The fixed shell (201) is a hollow structure. A hemostatic frame (501) is slidably disposed within the fixed housing (201) along the through direction of the fixed housing (201), and a hemostatic cotton block (504) is disposed at the bottom of the hemostatic frame (501); and A locking mechanism is provided inside the locking shell (204) to fix or release the position of the rotated fixed shell (201) and the slidable hemostatic frame (501). The locking mechanism includes a first locking component and a second locking component. The first locking component is provided on the fixed shell (201) and connected to the hemostatic frame (501) and the mounting rod (601). During the sliding process, the mounting rod (601) fixes or releases the position of the hemostatic frame (501) through the first locking component to adjust the height of the hemostatic frame 501 and thus adjust the hemostatic force. The second locking component is provided on the locking shell (204) and connected to the mounting frame (102) and the mounting rod (601). During the sliding process, the mounting rod (601) fixes or releases the position of the fixed shell (201) through the second locking component. The locking mechanism can fix the fixed shell 201 while adjusting the pressure of the hemostatic cotton block 504. The housing (101) has a first winding shaft (301) and a second winding shaft (401) that can rotate along its axis at both ends. One end of each of the two sets of fixing straps (404) is fixed to the first winding shaft (301) and the second winding shaft (401) respectively. The housing (101) is provided with a linkage component. When the fixing shell (201) rotates along its hinge point with the mounting frame (102), the linkage component drives the first winding shaft (301) and the second winding shaft (401) to rotate, thereby tightening the two sets of fixing straps (404).
2. The puncture point pressure hemostasis device according to claim 1, characterized in that: The hemostatic frame (501) has an installation hole (506) at its bottom, and the hemostatic cotton block (504) is provided with an installation post (505). The installation post (505) passes through the installation hole (506) and is press-fitted to it.
3. The puncture point pressure hemostasis device according to claim 1, characterized in that: A flexible plate (105) is provided at the bottom of the housing (101), and an anti-pressure sore pad (106) is provided at the bottom of the flexible plate (105).
4. The puncture point pressure hemostasis device according to claim 1, characterized in that, The locking mechanism further includes: Mounting rod (601) is slidably disposed in the locking housing (204) along its axis, and a baffle (602) is provided on the mounting rod (601). A first elastic element (603) is disposed between the baffle (602) and the locking housing (204); and A control block (604) is disposed on the mounting rod (601).
5. The puncture point pressure hemostasis device according to claim 4, characterized in that, The first locking component includes: The first wedge block (605) is slidably disposed on the fixed shell (201), and one end of it extends into the fixed shell (201); The first connecting rod (607) is hinged at one end to the first wedge block (605) and at the other end to the mounting rod (601); and A ratchet rack (503) is provided on the hemostat (501), and the wedge-shaped end of the first wedge block (605) is engaged on the ratchet rack (503).
6. The puncture point pressure hemostasis device according to claim 5, characterized in that: The fixed shell (201) is provided with a positioning post (202), and the hemostat (501) is provided with a positioning hole (502). The hemostat (501) is slidably sleeved on the positioning post (202) along the axis of the positioning post (202) through the positioning hole (502).
7. The puncture point pressure hemostasis device according to claim 6, characterized in that: The positioning post (202) is fitted with a second elastic element (205), and the two ends of the second elastic element (205) are in contact with the bottom surface of the hemostat (501) and the fixing shell (201), respectively.
8. The puncture point pressure hemostasis device according to claim 4, characterized in that, The second locking component includes: The second wedge block (606) is slidably disposed on the locking housing (204), with one end penetrating the locking housing (204) and extending outward. A fixing groove (103) is provided on the mounting frame (102), and one end of the second wedge block (606) is engaged within the fixing groove (103). The second connecting rod (608) is hinged at one end to the second wedge block (606) and at the other end to the mounting rod (601).
9. The puncture point pressure hemostasis device according to claim 1, characterized in that, The linkage components include: The first synchronous pulley (203) is located at the hinge point between the fixed housing (201) and the mounting frame (102); The second synchronous pulley (302) is mounted on and coaxially connected to the first winding shaft (301), and the first synchronous pulley (203) and the second synchronous pulley (302) are connected by the first synchronous belt (303); The third synchronous pulley (304) is mounted on the second synchronous pulley (302) and coaxially connected to it; and The fourth synchronous pulley (402) is mounted on and coaxially connected to the second winding shaft (401), and the third synchronous pulley (304) is connected to the fourth synchronous pulley (402) via the second synchronous belt (403).
Citation Information
Patent Citations
Puncture pressing hemostat
CN115568902A
Novel femoral hemostatic instrument
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Rack type finger root hemostasis belt
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