Clinical medical pressing hemostasis device

Abstract

The invention relates to the technical field of medical tourniquets, and discloses a clinical medical pressing hemostasis device which comprises a supporting body. The pressing assembly comprises a pressing body located on the bottom face of the supporting body, a rotation driving piece and a one-way movement limiting piece. The rotary driving part is arranged on the supporting main body and is used for driving the pressing body to linearly lift; and the one-way movement limiting piece comprises a locking part and a connecting part fixed on the rotary driving piece. According to the compression assembly, reverse rotation of a rotary knob is automatically limited through a ratchet wheel-pawl locking mechanism, compression body looseness caused by limb movement, high-frequency shaking or mistaken touch in the transferring process is effectively prevented, and it is ensured that the hemostasis pressure is continuous and stable; besides, in the lacing assembly, a hinged attaching body and a flexible contact pad are tightly attached to the limb, and the design of an arc-shaped notch and a sawtooth notch of the contact pad is combined, so that the friction force between the device and the skin is remarkably improved, and displacement of the supporting body is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical tourniquet, more particularly, it relates to a clinical medical compression hemostasis device. BACKGROUND

[0002] The compression hemostasis device is a medical device which can completely block blood flow by strongly compressing the artery near the end of the limb to achieve the purpose of quickly controlling severe arterial bleeding. It is mainly used for jetting hemorrhage caused by rupture of large arteries in limbs. The compression hemostasis device currently used in clinical practice is usually composed of a support main body, a screw drive and a tightening belt. The device drives the linear motion of the compression body by rotating the knob to drive the screw rod, and then realizes hemostasis by tightening the wound, and then uses the tightening belt to fix the device on the patient's limb. Such device relies on the self-locking of the screw to maintain the pressure, which can meet the basic hemostasis demand in static environment.

[0003] For example, the publication No. CN108013910A discloses an arterial compression hemostat, which comprises a base, an elastic body and a connecting belt connected to both ends of the base. The base is connected with a rotary pressure structure, which comprises a screw rod and a nut threadedly connected with the screw rod. The problem of displacement of the arterial compression hemostat during use, which leads to poor hemostasis effect, is solved.

[0004] However, although the above-mentioned hemostat solves the problem of displacement, it still has some deficiencies in actual use, such as the lack of reverse locking mechanism of the screw drive. During the emergency transfer of the patient, the rotary knob may be accidentally rotated in the reverse direction due to the large movement or high-frequency shaking of the limb, which may cause the compression body to loosen and lose pressure, and may cause the risk of secondary bleeding. In addition, the traditional tightening structure has insufficient friction, the traditional tightening belt does not fit closely with the limb, and the device is easy to displace, which may cause the compression body to deviate from the wound position. Therefore, there is an urgent need for a compression hemostasis device with higher stability and safety. SUMMARY

[0005] The present application aims to provide a clinical medical compression hemostasis device to solve the above-mentioned technical problems.

[0006] The present application solves the above-mentioned technical problems by the following technical solutions: The present application provides a clinical medical compression hemostasis device, which comprises: a support main body; a compression assembly comprising a compression body located on the bottom surface of the support main body, a rotary drive and a one-way motion limiting member; The rotary drive is arranged on the support main body and is used to drive the linear lifting of the compression body; The one-way motion limiting piece comprises a locking part and a connecting part fixed on the rotary driving piece, the locking part and the connecting part are in contact, the rotary driving piece is freely rotated in response to the forward rotation, and the reverse rotation of the rotary driving piece is prevented; The tightening assembly comprises two symmetrical close-to-body parts hingedly connected to two ends of the supporting body and a tightening belt connecting the two close-to-body parts.

[0007] Preferably, the rotary driving piece comprises a base fixed on the top surface of the supporting body, a knob rotated on the base and a screw rod slid on the supporting body, one end of the screw rod is in threaded cooperation with the knob, and the other end is fixed with the compression body.

[0008] Preferably, the connecting part is a ratchet wheel fixed on the bottom end of the knob, and the locking part comprises a pawl hingedly connected to the base and an elastic element driving the pawl to engage with the ratchet wheel.

[0009] Preferably, one end of the tightening belt is hingedly connected to one of the close-to-body parts, and the tightening belt is provided with an adhesive rough surface and an adhesive hook surface.

[0010] Preferably, the side of each of the two close-to-body parts away from the compression body is provided with a flexible contact pad, and the contact pad is a medical silica gel sponge.

[0011] Preferably, the side of the contact pad away from the tightening belt is provided with an arc-shaped notch matched with the human arm, and the side of the contact pad away from the tightening belt is provided with a plurality of linearly distributed sawtooth grooves flush with the length direction of the tightening belt.

[0012] Preferably, the end of the tightening belt is provided with a flexible clasp, and the side of the tightening belt away from the compression body is provided with a plurality of linearly distributed matching clamping shafts matched with the flexible clasp.

[0013] Preferably, the tightening belt is provided with a plurality of air holes, and the side of the tightening belt close to the compression body is provided with a protective pad.

[0014] Preferably, the elastic element is a torsion spring connecting the hinged end of the pawl and the base.

[0015] Preferably, the pawl comprises a manual unlocking part extending to the outside of the base.

[0016] The present application has the following advantages: The compression assembly provided by the present application automatically limits the reverse rotation of the knob through the ratchet-pawl locking mechanism, effectively prevents the compression body from loosening due to limb movement, high-frequency shaking or accidental touch during transportation, and ensures the continuous and stable hemostasis pressure. In addition, by setting the tightening assembly, the close-to-body parts and the flexible contact pads are closely attached to the limbs through hinging, and the arc-shaped notch and the sawtooth groove of the contact pad are designed, the friction between the device and the skin is significantly improved, and the displacement of the supporting body is avoided. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a clinical medical pressure hemostasis device provided by the present invention; Figure 2 This is a cross-sectional view of the support body in a clinical medical pressure hemostasis device provided by the present invention; Figure 3 This is an exploded view of the support body and the rotary drive component in a clinical medical pressure hemostasis device provided by the present invention; Figure 4 This is a schematic diagram of the structure between the screw, base and unidirectional motion limiting component in a clinical medical pressure hemostasis device provided by the present invention; Figure 5 This is a schematic diagram of the tightening component in a clinical medical pressure hemostasis device provided by the present invention; Figure 6 This is a schematic diagram of the adhesive body in a clinical medical pressure hemostasis device provided by the present invention.

[0018] In the diagram: 1. Support body; 2. Compression assembly; 21. Compression body; 22. Rotation drive component; 221. Base; 222. Knob; 223. Screw; 23. One-way motion limiting component; 231. Ratchet; 232. Pad; 233. Torsion spring; 3. Fastening assembly; 31. Fitting body; 32. Fastening band; 33. Contact pad; 34. Serrated groove; 35. Flexible retaining ring; 36. Matching retaining shaft; 37. Vent hole; 38. Protective pad. Detailed Implementation

[0019] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0020] Please refer to the following: Figures 1 to 3 A clinical medical pressure hemostasis device includes: a support body 1, a compression component 2, and a tightening component 3. The compression component 2 is used to apply pressure to the wound to prevent further bleeding. The tightening component 3 is connected to the support body 1 and is used to bind the support body 1 to the patient's limb, ensuring that the compression component 2 maintains pressure on the wound at all times.

[0021] Specifically, in order to realize the linear lifting function of the compression body 21, the application designs a way of rotating driving member 22: rotating driving member 22 includes a base 221 fixed on the top surface of the support body 1, a knob 222 rotating on the base 221, and a screw rod 223 sliding on the support body 1, one end of the screw rod 223 is threadedly connected with the knob 222, and the other end is fixed with the compression body 21; the screw rod 223 is provided with a flat surface on both sides, and a limiting groove adapted to the screw rod 223 is arranged on the support body 1 to limit the rotation of the screw rod 223; by rotating the knob 222, the screw rod 223 can be driven to move linearly along the support body 1, and then the compression body 21 can be linearly moved.

[0022] Please refer to Figures 2 to 4 , in order to realize the contact compression of the wound and prevent it from loosening during use, the application designs the specific structure of the compression assembly 2: the compression assembly 2 includes a compression body 21 located on the bottom surface of the support body 1, a rotating driving member 22 and a one-way motion limiting member 23, the rotating driving member 22 is arranged on the support body 1, which is used to drive the linear lifting of the compression body 21, so that the compression body 21 can be in close contact with the arm. The one-way motion limiting member 23 includes a locking portion and a connecting portion fixed on the rotating driving member 22, and the rotating driving member 22 can only rotate in the direction of driving the compression body 21 to descend by the cooperation of the locking portion and the connecting portion, which can prevent the rotating driving member 22 from loosening.

[0023] Specifically, the connecting portion is a ratchet wheel 231 fixed on the bottom end of the knob 222, and the locking portion includes a pawl 232 hinged on the base 221, one end of the pawl 232 is connected with the ratchet wheel 231, and a torsion spring 233 is connected between the hinged end of the pawl 232 and the base 221, and the other end of the pawl 232 extends to the outside of the base 221, which can be easily pressed manually.

[0024] The pressing hemostasis device is used, the medical staff first places the compression body 21 at the wound of the arm, first presses the top of the knob 222 downward by hand, so that the compression body 21 can temporarily compress the wound, prevent the wound from continuing to bleed, then the tightening assembly 3 is used to bundle the support body 1 and the arm together, at this time the whole hemostasis device is fixed on the patient's arm, then the knob 222 is further rotated in the forward direction, the lead screw drives the compression body 21 together, and further compresses the wound, and in the process of forward rotation of the knob 222, the ratchet 231 rotates together with the knob 222, and the ratchet 231 can generate an outward pushing force on the pawl 232, so that the pawl 232 cannot block the rotation of the ratchet 231, and the knob 222 can be normally rotated, after the compression body 21 reaches the appropriate compression position, stop rotating the knob 222, the screw rod 223 and the compression body 21 no longer move downward, and under the screw locking action of the knob 222, the screw rod 223 and the compression body 21 are kept fixed, and the pawl 232 is in contact with the ratchet 231 and is clamped, so that the knob 222 can be locked and cannot be automatically reversed, therefore, even in the process of first aid and transfer of the patient, the patient's arm moves greatly, or the arm shakes for a long time, or the knob 222 is touched by mistake, the knob 222 is always fixed and cannot be loosened, and the compression body 21 can keep stable compression state, so as to improve the use safety of the hemostasis device; when the hemostasis device needs to be removed or the compression body 21 pressure is adjusted regularly, the patient can move the arm properly, first press the end of the pawl 232, so that the pawl 232 starts to rotate and separates from the ratchet 231, and then the knob 222 is unlocked, and then the knob 222 can be reversed to drive the compression body 21 to move upward to the appropriate position. From the above scheme, the hemostasis device integrates the one-way motion limiting assembly 23, under the premise of retaining the forward rotation adjustment function of the knob 222, the reverse rotation freedom of the knob 222 is forcibly locked, so that the knob 222 is effectively prevented from loosening unexpectedly in any use scenario, the design ensures the reliability of the compression hemostasis core function while maintaining the original convenience of the knob 222 operation, and does not introduce additional operation complexity.

[0025] It should be further explained that the meshing movement of the ratchet wheel 231 and the pawl 232 is accompanied by mechanical contact sound. In order to optimize the operation performance, the ratchet wheel 231 and the pawl 232 can be made of 420 stainless steel, and the tooth shape of the ratchet wheel 231 is designed as a pressure angle of 30-45°, which ensures that the pawl 232 is quickly disengaged when rotating forward, while reducing friction noise. Under this configuration, the rotation operation of the knob 222 will produce regular meshing sound, and medical staff can indirectly evaluate the rotation adjustment amount of the knob 222 according to the sound frequency. For example, a preset specific frequency sound (such as five sounds) corresponds to reaching the clinically appropriate pressure threshold, and the knob rotation operation can be terminated. It should be noted that due to physiological differences between individuals, the actual pressure value needs to be dynamically calibrated in combination with the patient's signs, and if necessary, the rotation amount-pressure control relationship can be established to assist the operation, thereby avoiding the risk of secondary injury caused by pressure misalignment. As can be seen, in addition to providing the core function of reverse rotation locking, the one-way motion limiting mechanism also provides auxiliary criteria for the rotation adjustment amount, enhancing the controllability of the operation.

[0026] Please refer to Figure 1 , Figure 5 and Figure 6 , in order to further improve the anti-loosening effect of the hemostatic device, the tightening assembly 3 is improved, specifically: the tightening assembly 3 includes two symmetrical hinge bodies 31 hinged to the two ends of the support main body 1, one of the two hinge bodies 31 is hinged with a tightening belt 32, and the tightening belt 32 is provided with an adhesive rough surface and an adhesive hook surface. The side of the two hinge bodies 31 facing the compression body 21 is provided with a flexible contact pad 33, and the contact pad 33 is a medical silica gel sponge. The silica gel sponge has certain air permeability, sweat absorption and softness, and through the contact of the contact pad 33 with the arm, the wearing comfort of the hemostatic device can be improved. The side of the contact pad 33 away from the tightening belt 32 is provided with an arc-shaped notch adapted to the human arm, so that the contact pad 33 can be closely attached to the arm, and the contact area with the skin of the arm can be increased to improve the friction between the hemostatic device and the arm. The side of the contact pad 33 away from the tightening belt 32 is provided with a plurality of linearly distributed sawtooth grooves 34, which are flush with the length direction of the tightening belt 32. The design of the sawtooth grooves 34 can be used to further increase the friction of the contact pad 33, so that the contact pad 33 is not prone to position deviation during use. The tightening belt 32 is provided with a plurality of air holes 37, and the air holes 37 can increase the air permeability of the tightening belt 32, reducing the discomfort of the patient during long-term wearing. The side of the tightening belt 32 close to the compression body 21 is provided with a protective pad 38, which can also be a medical silica gel sponge, used to improve the comfort of the tightening belt 32.

[0027] Through the structural design of the tightening assembly 3, when the tightening band 32 is fixed, the two articulated close-fitting bodies 31 can be self-adaptively rotated to a state of conformal close-fitting with the arm contour, the flexible contact pad 33 on the inner side of the close-fitting body 31 deforms to fill the interface gap, thereby significantly increasing the actual contact area and normal force of the device with the arm skin, and finally ensuring that the support main body 1 has no displacement offset under dynamic load through the directional improvement of the interface friction force.

[0028] Please refer to Figure 5 Based on the above scheme, the tightening band 32 only uses the bonding mode, and the fixing effect still has defects, therefore, the above tightening band 32 is optimized, specifically, the end of the tightening band 32 is provided with a flexible clasp 35, and the side of the tightening band 32 away from the compression body 21 is provided with a plurality of linearly distributed cooperating clamping shafts 36 matched with the flexible clasp 35, the front end of the cooperating clamping shaft 36 is larger than the rear end, the flexible clasp 35 can be a medical rubber ring, and the inner ring diameter is smaller than the front end of the cooperating clamping shaft 36.

[0029] The fixing operation of the tightening assembly 3 is started by threading the free end of the tightening band 32 to the opening of the opposite close-fitting body 31, and then the two close-fitting bodies 31 are synchronously folded to realize the full circumferential close-fitting with the arm surface through axial tension driving, and then the mechanical engagement locking of the flexible clasp 35 and the nearest end cooperating clamping shaft 36 and the interface adhesion fixing of the bonding rough surface and the bonding hook surface are sequentially performed, the composite locking strategy utilizes the cooperative energy consumption mechanism of the mechanical engagement resistance and the bonding interface shear force, which ensures that the anti-loosening performance of the tightening band 32 is significantly improved, and at the same time, the single-handed operation and convenient installation and removal are maintained.

[0030] The above describes the embodiments of the present application, but the present application is not limited to the above specific embodiments, the above specific embodiments are only illustrative, but not limited, and those skilled in the art can make many forms under the inspiration of the present application, which all belong to the protection of the present application.

Claims

1. A clinical medical compression hemostasis device, characterized in that, The utility model relates to a compression and tightening device for human body, comprising: a support body; a compression assembly comprising a compression body on the bottom surface of the support body, a rotary driving member and a one-way motion limiting member; the rotary driving member is arranged on the support body and used to drive the compression body to linearly ascend and descend; the one-way motion limiting member comprises a locking portion and a connecting portion fixed on the rotary driving member, and the locking portion and the connecting portion are in contact with each other, so that the rotary driving member is freely rotated in response to the forward rotation of the rotary driving member and is prevented from being reversely rotated; a tightening assembly comprising two symmetrical close-to-body members hingedly connected to the two ends of the support body and a tightening belt connected between the two close-to-body members.

2. The clinical medical compression hemostasis device according to claim 1, characterized in that, the rotary driving member comprises a base fixed on the top surface of the support body, a knob rotated on the base and a screw rod slid on the support body, one end of the screw rod is in threaded connection with the knob, and the other end is fixed with the compression body.

3. The clinical medical compression hemostasis device according to claim 2, characterized in that, the connecting portion is a ratchet wheel fixed on the bottom end of the knob, and the locking portion comprises a pawl hingedly connected to the base and an elastic element used to drive the pawl to engage with the ratchet wheel.

4. The clinical medical compression hemostasis device according to claim 1, characterized in that, one end of the tightening belt is hingedly connected to one of the close-to-body members, and the tightening belt is provided with an adhesive rough surface and an adhesive hook surface.

5. The clinical medical compression hemostasis device according to claim 4, characterized in that, the side of each of the two close-to-body members, which faces the compression body, is provided with a flexible contact pad, and the contact pad is a medical silica gel sponge.

6. The clinical medical compression hemostasis device according to claim 5, characterized in that, the side of the contact pad, which is away from the tightening belt, is provided with an arc-shaped notch matched with the human arm, and the side of the contact pad, which is away from the tightening belt, is provided with a plurality of linearly distributed sawtooth grooves, which are flush with the length direction of the tightening belt.

7. The clinical medical compression hemostasis device according to claim 4, characterized in that, the end of the tightening belt is provided with a flexible clasp, and the side of the tightening belt, which is away from the compression body, is provided with a plurality of linearly distributed matching clamping shafts matched with the flexible clasp.

8. The clinical medical compression hemostasis device according to claim 4, characterized in that, the tightening belt is provided with a plurality of air holes, and the side of the tightening belt, which is close to the compression body, is provided with a protective pad.

9. The clinical medical compression hemostasis device according to claim 3, characterized in that, the elastic element is a torsion spring, which is connected between the hinged end of the pawl and the base.

10. The clinical medical compression hemostasis device according to claim 3, characterized in that, the pawl comprises a manual unlocking portion extended to the outside of the base.

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