A pressure mechanism and a compression hemostat

Abstract

The present invention belongs to the technical field of medical devices, and in particular, relates to a pressure mechanism and a compression hemostat. The pressure mechanism includes: a transmission structure and a pressure structure; the transmission structure is rotatably connected to an external structural member and transmits an external torque to the pressure structure, and the pressure structure is used to compress and stop bleeding on a human wound under the action of the external torque. The pressure structure includes a screw rod connected to the transmission structure at one end and a pressure member threadedly connected to the other end of the screw rod, and the pressure member is positioned and arranged in its circumferential direction, and the screw rod rotates with the transmission structure and drives the pressure member to move along the axial direction of the screw rod, so that the free end of the pressure member abuts against the human wound; wherein the transmission structure is detachably connected to the screw rod. The present invention is detachably connected to the transmission wheel through the screw rod, and after the pressure structure completes hemostasis once, the pressure structure is removed from the transmission structure, and then replaced with other unused pressure structures, thereby reducing the workload of medical staff and reducing the risk of cross infection.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a pressure mechanism and a compression hemostat. Background Art

[0002] At present, the hemostasis process of the compression hemostat relies on the pressure mechanism to press the patient's body surface, and the pressure mechanism is generally in direct contact with the patient's open wound. Among them, the pressure mechanism includes a pressure structure acting on the human body wound and a transmission wheel connecting the pressure structure and the hemostat body. The transmission wheel is rotatably set on the hemostat body, and one end of the pressure structure is fixedly connected to the transmission wheel. In traditional compression hemostat, the pressure mechanism and the hemostat body cannot be disassembled and separated. The hemostat body drives the transmission wheel to rotate, and the transmission wheel drives the pressure structure to move toward the human body wound and press the blood vessels at the wound, thereby achieving the purpose of hemostasis.

[0003] However, during the hemostasis operation, the pressure structure is often contaminated with the patient's blood or sweat. Since the pressure structure is fixedly connected to the transmission wheel, the pressure structure must be thoroughly cleaned and disinfected after each use, which not only wastes the labor of medical staff, but also easily leads to cross infection due to incomplete disinfection. Summary of the invention

[0004] The purpose of the present invention is to provide a pressure-applying mechanism, aiming to solve the problem of how to reduce the workload of medical personnel and reduce the risk of cross infection.

[0005] The present invention provides a pressure mechanism, comprising: a transmission structure and a pressure structure; the transmission structure is rotatably connected to an external structural member and transmits an external torque to the pressure structure, and the pressure structure is used to compress and stop bleeding on a human wound under the action of the external torque. The pressure structure comprises a screw rod connected to the transmission structure at one end and a pressure piece threadedly connected to the other end of the screw rod, and the pressure piece is circumferentially positioned and arranged, and the screw rod rotates with the transmission structure and drives the pressure piece to move along the axial direction of the screw rod so that the free end of the pressure piece abuts against the human wound; wherein the transmission structure is detachably connected to the screw rod.

[0006] The technical effect of the present invention is that the screw rod is detachably connected to the transmission wheel. After the pressure structure completes one compression hemostasis, the pressure structure can be removed from the transmission structure and replaced with other unused pressure structures, thereby avoiding the need to disinfect and clean the pressure structure before the next compression hemostasis, reducing the workload of medical staff and reducing the risk of cross infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is a three-dimensional structural diagram of a compression hemostat provided by an embodiment of the present invention;

[0008] Figure 2 yes Figure 1 A three-dimensional structural diagram of a pressure mechanism of a compression hemostat;

[0009] Figure 3 yes Figure 2 An exploded diagram of the pressure mechanism;

[0010] Figure 4 yes Figure 3 A local enlarged view of point A;

[0011] Figure 5 yes Figure 3 A three-dimensional structural diagram of the transmission structure;

[0012] Figure 6 yes Figure 1 Cross-sectional view of a compression hemostat.

[0013] The corresponding relationship between the numbers and names in the accompanying drawings is as follows:

[0014] 100, compression hemostat; 10, housing mechanism; 101, pressure mechanism; 13, display mechanism; 17, switch button; 16, base; 11, connecting sleeve; 12, hand-held structure; 20, transmission structure; 30, pressure structure; 40, trigger convex point; 35, block; 21, adapter hole; 311, elastic arm; 312, threaded section; 31, screw rod; 34, threaded hole; 32, pressure member; 321, pressure rod; 322, pressure head; 33, buffer pad; 315, first guide surface; 313, buckle head; 314, force arm body; 316, avoidance groove; 211, second guide surface; 15, driving mechanism; DETAILED DESCRIPTION

[0015] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0016] In the description of the present invention, it is necessary to understand that the orientation or positional relationship indicated by the terms "thickness", "up", "down", "vertical", "parallel", "bottom", "angle", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0017] In the present invention, unless otherwise clearly specified and limited, terms such as "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements.

[0018] See also Figures 1 to 3 The embodiment of the present invention provides a pressure mechanism 101, which can compress and stop bleeding on human wounds under the action of external torque. The pressure mechanism 101 includes: a transmission structure 20 and a pressure structure 30. The transmission structure 20 can be rotatably connected to an external structural member and rotate relative to the external structural member under the drive of the external torque. It can be understood that the transmission structure 20 can rotate clockwise or counterclockwise relative to the external structural member. Optionally, the transmission structure 20 is a transmission wheel connected to the pressure structure 30 and driven by the external torque. The pressure structure 30 is used to compress and stop bleeding on human wounds, and the pressure structure 30 includes a screw 31 connected to the transmission wheel at one end and a pressure member 32 threadedly connected to the other end of the screw 31. The pressure member 32 is positioned and arranged in its circumferential direction, that is, the circumferential rotation of the pressure member 32 is limited, the transmission wheel drives the screw 31 to rotate, and the pressure member 32 does not rotate with the screw 31, and the pressure member 32 can only slide back and forth along the axial direction of the screw 31. Specifically, the screw 31 rotates with the transmission wheel and drives the pressure member 32 to move along the axial direction of the screw 31, so that the free end of the pressure member 32 abuts against the wound of the human body and stops bleeding. The transmission wheel is detachably connected to the screw 31. Optionally, the screw 31 and the transmission wheel can be detachably connected using a threaded structure or a buckle structure.

[0019] The screw rod 31 is detachably connected to the transmission wheel. After the pressure structure 30 completes one compression hemostasis, the pressure structure 30 can be removed from the transmission structure 20 and replaced with other unused pressure structures 30, thereby avoiding the need to disinfect and clean the pressure structure 30 before the next compression hemostasis, reducing the workload of medical staff and reducing the risk of cross infection.

[0020] See also Figures 4 to 6 In one embodiment, the transmission structure 20 is provided with an adapter hole 21, the rotation axis of the transmission structure 20 coincides with the central axis of the adapter hole 21, and one end of the screw rod 31 is detachably disposed in the adapter hole 21. Optionally, the adapter hole 21 is provided at the rotation center of the transmission structure 20, and the screw rod 31 is detachably connected to the transmission structure 20 through the adapter hole 21, that is, one end of the screw rod 31 can be interference-fitted with the adapter hole 21, thereby realizing a detachable connection.

[0021] In one embodiment, the screw rod 31 includes a threaded section 312 connected to the pressure member 32 at one end and an expansion section connected to the other end of the threaded section 312 and located in the adapter hole 21. The expansion section includes a plurality of elastic arms 311 arranged at intervals and having elastic restoring force. An avoidance groove 316 is formed between two adjacent elastic arms 311 and the end surface of the threaded section 312. Each elastic arm 311 retracts into the corresponding avoidance groove 316, so that the expansion section is inserted into the adapter hole 21 and each elastic arm 311 elastically abuts against the hole wall of the adapter hole 21 and the transmission structure 20 abuts against the end surface of the threaded section 312. It can be understood that the inner diameter of the adapter hole 21 is smaller than the outer diameter of the threaded section 312. Optionally, the outer diameter of the expansion section is larger than the inner diameter of the adapter hole 21, so that after the expansion section is inserted into place, the elastic arm 311 produces appropriate deformation and elastically abuts against the hole wall of the adapter hole 21, which is conducive to improving the reliability of the connection between the screw rod 31 and the transmission wheel.

[0022] Optionally, in this embodiment, four elastic arms 311 are provided, and the four elastic arms 311 are circumferentially spaced apart on the end surface of the threaded segment 312 .

[0023] In one embodiment, the elastic arm 311 includes an arm body 314 that penetrates the adapter hole 21 and is connected to the threaded section 312, and a buckle head 313 that is disposed at the free end of the arm body 314 and buckled to the edge of the hole opening of the adapter hole 21, and the transmission structure 20 is located between the buckle head 313 and the threaded section 312. Each buckle head 313 is clamped at the edge of the hole opening of the adapter hole 21, which is conducive to improving the stability of the connection between the screw rod 31 and the transmission wheel.

[0024] See also Figures 4 to 6 In one embodiment, the buckle head 313 is provided with a first guide surface 315 for guiding the expansion section to be inserted into the transfer hole 21; the edge of one end of the transfer hole 21 is provided with a second guide surface 211 for guiding each buckle head 313 to be inserted into the transfer hole 21, and the shape of the first guide surface 315 is adapted to the shape of the second guide surface 211. Through the cooperation of the first guide surface 315 and the second guide surface 211, the screw rod 31 can be quickly inserted into the transfer hole 21, thereby improving the replacement efficiency of the pressure structure 30.

[0025] In one embodiment, the edge of the other end of the adapter hole 21 is provided with a third guide surface for guiding the screw rod 31 to be pulled out of the adapter hole 21. The third guide surface allows the screw rod 31 to be quickly pulled out of the adapter hole 21, thereby improving the replacement efficiency of the pressure structure 30.

[0026] In one embodiment, the cross-sectional shape of the adapter hole 21 is non-circular, and the shape of the position where the screw rod 31 is inserted into the adapter hole 21 is adapted to the adapter hole 21. Specifically, in this embodiment, the cross-sectional shape of the adapter hole 21 is a regular hexagon, and the shape of the position where the screw rod 31 is inserted into the adapter hole 21 is also a regular hexagon, so that during the rotation process, the screw rod 31 will not slide relative to the transmission wheel, thereby improving the rotation efficiency. In other embodiments, the cross-sectional shape of the adapter hole 21 can also be an ellipse.

[0027] The present invention further proposes a compression hemostat 100, which includes a pressure mechanism 101. The specific structure of the pressure mechanism 101 refers to the above embodiment. Since the compression hemostat 100 adopts all the technical solutions of all the above embodiments, it also has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0028] See also Figures 1 to 6 The compression hemostat 100 is used to perform compression hemostasis on human wounds, and further includes: a housing mechanism 10 for the transmission wheel, a driving mechanism 15 disposed in the housing mechanism 10 and used to drive the transmission wheel to rotate, and a pressure sensor located in the housing mechanism 10 and used to detect the pressure of the screw 31. Optionally, the transmission wheel is a gear, and the driving structure drives the transmission wheel to rotate through gear meshing, and the transmission wheel then transmits the torque to the screw 31. In one embodiment, the compression hemostat 100 further includes a display mechanism 13, which is disposed in the placement cavity and is used to display the pressure value detected by the pressure sensor.

[0029] Specifically, the pressure sensor is used to detect the pressure exerted on the screw 31 in real time during the compression hemostasis process, and transmit the pressure value to the display mechanism 13. During use, the display mechanism 13 displays the pressure value of the screw 31 in real time, so as to judge whether the hemostasis pressure exerted on the human body is appropriate.

[0030] In one embodiment, the housing mechanism 10 includes a hand-held structure 12 for human hand holding and having a placement cavity, and a connecting sleeve 11 connected to the hand-held structure 12 and connected to the placement cavity and used to be sleeved with the pressure mechanism 101, the driving mechanism 15 is arranged in the placement cavity, the transmission structure 20 is located at one end of the connecting sleeve 11, the pressure member 32 extends from the other end of the connecting sleeve 11, the detection part of the pressure sensor abuts the free end of the screw 31, and a groove is also provided in the connecting sleeve 11 along the axial direction of the screw 31. The pressure member 32 is convexly provided with a block 35 that cooperates with the groove to limit the circumferential rotation of the pressure member 32, one end of the block 35 is connected to the pressure member 32, and the other end of the block 35 is slidably connected to the groove. Optionally, three grooves are arranged at intervals on the inner wall of the connecting sleeve 11, and correspondingly, three blocks 35 are also arranged accordingly. The three slots are arranged in a herringbone shape, so that the pressure-applying member 32 can be inserted into the connecting sleeve 11 only when each of the clamping blocks 35 corresponds to the corresponding slot, thereby facilitating the alignment connection between the pressure-applying member 32 and the connecting sleeve 11 .

[0031] Optionally, a switch slot is provided in the slot wall of one of the slots, and a switch convex point is provided on the corresponding block 35. Further, a travel switch is provided in the switch slot, and after the pressure member 32 moves to the limit position, the switch convex point triggers the travel switch, so that the drive mechanism 15 stops power output. It can be understood that the compression hemostat 100 also includes a control mechanism, which receives the trigger signal of the travel switch and controls the power output of the drive mechanism 15.

[0032] Optionally, the pressure member 32 includes a pressure rod 321 threadedly connected to the screw rod 31, a pressure head 322 connected to the free end of the pressure rod 321, and a buffer pad 33 connected to the pressure head 322 and abutting against the wound of the human body, and the buffer pad 33 is made of a flexible material, thereby improving the comfort of the patient and preventing damage to human tissue. The threaded hole 34 is opened in the pressure rod 321, and the part of the pressure head 322 that contacts the human body can be set in different shapes according to the anatomical morphology of the compressed part, thereby improving the comfort of the patient.

[0033] Optionally, the compression hemostat 100 further includes a base 16 and a switch button 17 disposed on the handheld structure 12, and the base 16 and the connecting sleeve 11 are respectively connected to two ends of the handheld structure 12. During use, the base 16 is disposed on the human body surface, so as to facilitate the positioning operation of the pressure mechanism 101.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure mechanism, characterized in that: include: A transmission structure and a pressure structure; the transmission structure is rotatably connected to an external structural member and transmits an external torque to the pressure structure, and the pressure structure is used to compress and stop bleeding on a human wound under the action of the external torque. The pressure structure includes a screw rod connected to the transmission structure at one end and a pressure piece threadedly connected to the other end of the screw rod, and the pressure piece is positioned and arranged in its circumferential direction. The screw rod rotates with the transmission structure and drives the pressure piece to move along the axial direction of the screw rod, so that the free end of the pressure piece abuts against the human wound; wherein the transmission structure is detachably connected to the screw rod; The transmission structure is provided with a transfer hole, the rotating shaft of the transmission structure coincides with the central axis of the transfer hole, and one end of the screw rod is detachably arranged in the transfer hole; The screw rod includes a threaded section whose one end is connected to the pressure piece and an expansion section connected to the other end of the threaded section and located in the adapter hole. The expansion section includes a plurality of elastic arms arranged at intervals and having elastic restoring force. An avoidance groove is formed between two adjacent elastic arms and the end face of the threaded section. Each elastic arm retracts into the corresponding avoidance groove. The outer diameter of the expansion section is larger than the inner diameter of the adapter hole, so that the expansion section is inserted into the adapter hole and each elastic arm elastically abuts against the hole wall of the adapter hole and the transmission structure abuts against the end face of the threaded section, so as to improve the reliability of the connection between the screw rod and the transmission structure.

2. The pressure applying mechanism according to claim 1, characterized in that: The elastic arm includes an arm body passing through the adapter hole and connected to the threaded section, and a buckle head arranged at the free end of the arm body and buckled to the edge of the hole of the adapter hole, and the transmission structure is located between the buckle head and the threaded section.

3. The pressure applying mechanism according to claim 2, characterized in that: The buckle head is provided with a first guiding surface for guiding the expansion section to be inserted into the adapter hole; a second guiding surface for guiding each buckle head to be inserted into the adapter hole is provided at an edge of an opening at one end of the adapter hole, and the shape of the first guiding surface is adapted to the shape of the second guiding surface.

4. The pressure applying mechanism according to claim 2, characterized in that: The edge of the hole opening at the other end of the adapter hole is provided with a third guiding surface for guiding the screw rod to be pulled out of the adapter hole.

5. The pressure applying mechanism according to any one of claims 1 to 4, characterized in that: The cross-sectional shape of the adapter hole is non-circular, and the shape of the position where the screw is inserted into the adapter hole is adapted to the adapter hole.

6. A compression hemostat, used for compressing and stopping bleeding on human wounds, characterized in that: include: A pressure mechanism as described in any one of claims 1-5, a shell mechanism for setting the transmission structure, a driving mechanism arranged in the shell mechanism and used to drive the transmission structure to rotate, and a pressure sensor located in the shell mechanism and used to detect the pressure of the screw.

7. The compression hemostat according to claim 6, characterized in that: The shell mechanism includes a hand-held structure for human hand holding and having a placement cavity, and a connecting sleeve connected to the hand-held structure and communicated with the placement cavity and used to sleeve the pressure mechanism. The driving mechanism is arranged in the placement cavity, the transmission structure is located at one end of the connecting sleeve, the pressure piece extends out of the other end of the connecting sleeve, the detection part of the pressure sensor abuts the free end of the screw, and a groove is also provided in the connecting sleeve along the axial direction of the screw. The pressure piece is convexly provided with a block that cooperates with the groove to limit the circumferential rotation of the pressure piece, one end of the block is connected to the pressure piece, and the other end of the block is slidably connected to the groove.

8. The compression hemostat according to claim 7, characterized in that: The compression hemostat further comprises a display mechanism, which is disposed in the placement cavity and is used to display the pressure value detected by the pressure sensor.

Images