A shrink press wrap hemostatic device

Abstract

The application discloses a shrinkage and pressure bandaging hemostasis device and belongs to the technical field of hemostasis bandaging. The device comprises a retractor assembly, a shrinkage assembly and a pressure filling assembly. The retractor assembly comprises a retractor fixing seat, a skin retractor fixed on the lower surface of the retractor fixing seat and a pull rope connected with the retractor fixing seat. The shrinkage assembly comprises a base body, an inner cylinder installed in the middle part of the base body and penetrating through the upper and lower parts and an outer cylinder sleeved on the outer part of the inner cylinder and limited from reverse rotation by a reverse stopping mechanism. The pressure filling assembly comprises a hollow filling cover connected at the lower end of the inner cylinder and filled with hemostasis filling and a pressure knob installed at the upper end of the inner cylinder and used for pressing the filling in the hollow filling cover. The outer cylinder with the reverse stopping mechanism is used for synchronously winding all the retractor assemblies, so that the synchronous pulling around the wound can be realized quickly. The device is also used for synchronously releasing the hemostasis filling and cooperating with the wound shrinkage function, so that the hemostasis function is better.

Description

TECHNICAL FIELD

[0001] The present application relates to a shrinkage and pressure bandaging hemostatic device, belonging to the technical field of hemostatic bandaging. BACKGROUND

[0002] Wound bandaging and hemostasis can quickly reduce blood loss, prevent organ ischemic injury caused by blood loss, and maintain normal physiological functions of the body, which is the key first step in trauma first aid. It can save lives, gain time for subsequent debridement, suturing and other treatments, and reduce the risk of infection.

[0003] At present, the common wound hemostasis methods are as follows: (1) compression hemostasis method: it is the most direct and effective method, generally using clean gauze, cotton ball to press the wound for 5-10 minutes, suitable for small wound bleeding. (2) Hemostatic bandage method: mainly used for large artery bleeding of limbs, using elastic hemostatic bandage to tighten the wound near the heart end to stop blood loss, not too loose or too tight, and the use time is not more than 2 hours, and it is loosened for several minutes every half hour. (3) Filling hemostasis method: when deep wound bleeding occurs, use sterile gauze or cotton ball to fill the wound, and then use bandage to press and bandage, which is suitable for axillary, inguinal and other difficult-to-directly-press parts.

[0004] In addition, for gunshot wounds, penetrating wounds and other wounds, hemostatic clips need to be used to shrink the skin around the wound, which can play a role similar to suturing, which is conducive to improving the effect of wound bandaging and hemostasis.

[0005] However, the existing hemostatic device has relatively single function. For example, a medical circular wound shrinkage device (publication number CN211243536U), its main function is to shrink the wound to a certain extent to reduce bleeding. However, when shrinking the wound, it needs to roll up each traction line separately, which is relatively cumbersome to operate. And it is not suitable for emergency treatment of gunshot wounds, penetrating wounds and other wounds. Such wounds not only need to be shrunk to reduce external bleeding, but also need to be filled and pressed simultaneously. The device not only cannot fill the hemostatic material, but also blocks the wound opening. Filling can effectively block the blood vessel breakage in the deep part of the wound and prevent bleeding from the inside; pressure hemostasis can further strengthen the pressure on the wound, so that the blood can coagulate faster. Only the cooperation of multiple hemostasis methods can improve the hemostasis efficiency in the treatment of complex trauma, gain valuable treatment time for patients, and reduce the risk of shock and even death caused by excessive blood loss.

[0006] Therefore, a bandaging and hemostatic device with multiple functions such as shrinkage, filling and pressure is developed, which can quickly complete the shrinkage of the wound, fill the hemostatic material and press the wound at the same time, so as to quickly bandage and hemostasis the deep and heavy bleeding wound. SUMMARY

[0007] The technical problem to be solved by the present application is to provide a shrinkage and pressure bandaging hemostasis device, which belongs to the technical field of hemostasis bandaging and solves the problems of single function and complicated operation of the current hemostasis clamp.

[0008] The technical problem to be solved by the present application is solved by the following technical scheme:

[0009] The shrinkage and pressure bandaging hemostasis device comprises:

[0010] The retractor assembly comprises a retractor fixing seat, a skin retractor fixed on the lower surface of the retractor fixing seat, and a pull rope connected with the retractor fixing seat.

[0011] The shrinkage assembly comprises a base body, an inner cylinder installed in the middle part of the base body and penetrating up and down, and an outer cylinder sleeved outside the inner cylinder and limited to reverse rotation by a reverse prevention mechanism, the inner cavity of the inner cylinder serving as a channel for the access and pressure of the hemostatic filling, a plurality of retractor assemblies are distributed around the shrinkage assembly in a star-shaped divergent manner, and the pull ropes of the retractor assemblies are connected with the outer cylinder, and when the outer cylinder rotates forward, all the pull ropes are synchronously wound.

[0012] The pressure filling assembly comprises a hollow filling cover connected at the lower port of the inner cylinder and filled with the hemostatic filling, and a pressure knob installed at the upper port of the inner cylinder and downward pressing the filling in the hollow filling cover.

[0013] Preferably, the reverse prevention mechanism comprises a lower ratchet wheel coaxially arranged with the inner cylinder and fixed on the upper surface of the base body, an upper ratchet wheel fixed on the lower end surface of the outer cylinder and engaged with the lower ratchet wheel, a ring of blocking rings fixed inside the lower port of the outer cylinder, a compression spring sleeved above the blocking rings between the outer cylinder and the inner cylinder, and a mounting ring fixed outside the upper port of the inner cylinder for limiting the upper end surface of the compression spring.

[0014] Preferably, the compression spring is composed of an upper gasket, a lower gasket, and a spring body coaxially fixed between the upper gasket and the lower gasket.

[0015] Preferably, a plurality of pull rope holes for the pull ropes are arranged on the base body in a star-shaped divergent manner.

[0016] Preferably, a plurality of protruding positioning blocks are arranged on the outer circumferential side of the outer cylinder, a plurality of fastening through holes penetrating the positioning blocks are arranged in the tangential direction of the outer circumferential surface of the outer cylinder, and the pull ropes penetrating the fastening through holes are tightly fixed by rotating the positioning blocks outside the fastening screws.

[0017] Preferably, a rotating fine adjustment mechanism for adjusting the length of the pull rope is mounted on the pull hook fixing seat, the rotating fine adjustment mechanism comprises a fine adjustment knob, a worm, a turbine, a middle shaft and a rotating drum, a cavity for accommodating the pull rope is arranged in the pull hook fixing seat, a vertically arranged worm capable of freely rotating is arranged in the cavity, the upper end of the worm is connected with the fine adjustment knob arranged above the pull hook fixing seat, the turbine is rotatably arranged in the cavity through the horizontally arranged middle shaft and is engaged with the worm, the rotating drum is sleeved on the middle shaft and is fixed with the turbine, and the end of the pull rope is connected with the rotating drum.

[0018] Preferably, the hemostatic filling material is at least one of absorbent cotton, absorbent gauze and water-absorbing and swelling filling material.

[0019] Preferably, the hollow filling cover is made of flexible rubber material.

[0020] Preferably, a plurality of vertical expansion tear lines are arranged on the circumference of the hollow filling cover.

[0021] Preferably, the pressure knob comprises an upper knob part and a lower threaded part, and the threaded part of the pressure knob is screwed with the internal thread arranged on the inner wall of the upper end of the inner cylinder.

[0022] The beneficial effects of the present application are:

[0023] (1) Wound contraction function: the outer cylinder with the non-return mechanism is used to synchronously wind all the pull hook assemblies, which is beneficial to synchronously pull the wound around, the pull force can be maintained at any time after the pulling is completed, the wound is quickly reduced, the operation is convenient and fast, the wound contraction time is shortened, and if the wound is too tight, the reverse rotation can be realized by pulling to release the pull rope;

[0024] (2) Synchronous release of hemostatic material and expansion hemostasis function: the outer cylinder is sleeved on the inner cylinder of the base body, a channel for additionally adding the hemostatic filling material and applying pressure to the hemostatic filling material is reserved, the wound inside can be filled with the hemostatic filling material; the water-absorbing and swelling filling material with water absorption and self-expansion effect is preferably used as the hemostatic filling material, the wound inside is continuously expanded and extruded by absorbing the blood in the wound, and the coordination of the external contraction and the internal expansion has a better compression hemostasis effect;

[0025] (3) Hemostatic pressure adjustment function: the pressure knob capable of adjusting the degree of downward pressure is arranged above the hemostatic filling material to change the compression force of the hemostatic filling material on the wound, compared with the existing simple hemostatic bandaging mode, the compression force adjustment can be more conveniently performed locally, the wound is prevented from being too loose or too tight, and a better compression hemostasis effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The schematic diagram of the state structure for the present application;

[0027] Figure 2 The schematic diagram of the structure of the pull hook assembly;

[0028] Figure 3 The schematic diagram of the explosion structure of the shrink assembly and the pressurized filling assembly;

[0029] Figure 4 The schematic diagram of the assembly structure of the shrink assembly and the pressurized filling assembly;

[0030] Figure 5 The schematic diagram of the state structure of the upper ratchet and the lower ratchet when the outer cylinder of the shrink assembly is pulled upward;

[0031] Figure 6 The schematic diagram of the structure of the rotation fine adjustment mechanism installed on the pull hook assembly.

[0032] In the figure:

[0033] 1. Pull hook assembly; 101. Pull hook fixing seat; 102. Skin pull hook; 103. Pull rope; 104. Cavity;

[0034] 2. Shrink assembly; 201. Base body; 202. Inner cylinder; 203. Outer cylinder; 204. Pull rope hole; 205. Positioning block; 206. Fastening through hole;

[0035] 3. Pressurized filling assembly; 301. Hemostatic filling; 302. Hollow filling cover body; 303. Pressurized knob; 304. Swelling tear line; 305. Knob part; 306. Threaded part;

[0036] 4. Reverse prevention mechanism; 401. Lower ratchet; 402. Upper ratchet; 403. Blocking ring; 404. Compression spring; 405. Installation ring; 406. Upper gasket; 407. Lower gasket; 408. Spring body;

[0037] 5. Rotation fine adjustment mechanism; 501. Fine adjustment knob; 502. Worm; 503. Turbine; 504. Middle shaft; 505. Rotating cylinder. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, purposes achieved and effects of the present application easy to understand, the present application is further described below in combination with specific figures.

[0039] As Figure 1As shown, the shrinkage and compression bandaging hemostasis device is mainly used for treating deep wounds with heavy bleeding. In emergency, the device is used to shrink, fill and compress the wound for hemostasis, and then the device is bandaged in the innermost layer of the wound by the bandaging tape for compression hemostasis. The shrinkage and compression bandaging hemostasis device comprises: a retractor assembly 1 inserted into the skin around the wound and used for traction, a shrinkage assembly 2 used for synchronous shrinkage of the pull ropes 103 of multiple retractor assemblies 1, and a compression filling assembly 3 used for hemostasis filling and compression of the inside of the wound.

[0040] As shown in Figure 2 , Figure 6 , the retractor assembly 1 comprises a retractor fixed seat 101, a skin retractor 102 fixed on the lower surface of the retractor fixed seat 101, and a pull rope 103 connected with the retractor fixed seat 101. The skin retractor 102 adopts multiple medical stainless steel nails fixed on the lower side of one end of the retractor fixed seat 101, and the pull rope 103 is connected to the other end of the retractor fixed seat 101. The tips of the medical stainless steel nails are inwardly biased towards the wound direction, and the included angle between the medical stainless steel nails and the bottom surface of the retractor fixed seat 101 is preferably 45°-70°.

[0041] In order to quickly shrink the wound and control the bleeding of the wound, the skin retractor 102 is inserted into the skin around the wound, gathered and shrunk towards the middle, and the wound is quickly reduced. The damage of the skin retractor 102 to the skin is much smaller than the damage of heavy bleeding, so in the case of emergency hemostasis, the skin retractor 102 can be used as a stable traction anchor point to shrink and hemostasis the wound. Compared with the current method of sticking skin to traction the wound, the medical stainless steel nails can withstand greater tension when traction the skin, and the retractor assembly 1 is more stable and difficult to loosen. The use of multiple medical stainless steel nails can share the tension and further reduce the damage to the skin. The medical stainless steel nails have good biocompatibility and generally do not cause immune response or other adverse reactions in the human body.

[0042] As shown in Figure 1 , Figures 3-5 , the shrinkage assembly 2 comprises a base body 201, an inner cylinder 202 installed in the middle of the base body 201 and penetrating up and down, and an outer cylinder 203 sleeved outside the inner cylinder 202 and limited from reversing by the reverse stopping mechanism 4. The inner cavity of the inner cylinder 202 serves as a channel for the hemostatic filling 301 to enter and exit and compression. Multiple retractor assemblies 1 are distributed around the shrinkage assembly 2 in a star-shaped divergent manner. The pull rope 103 of the retractor assembly 1 is connected with the outer cylinder 203, and when the outer cylinder 203 rotates forward, all the pull ropes 103 are synchronously wound.

[0043] The inner cylinder 202 penetrating up and down reserves an additional channel for the hemostatic filling 301 in the middle of the shrinkage assembly 2, and becomes a port for applying downward pressure to the hemostatic filling 301.

[0044] The hook assembly 1 is distributed in a star-shaped pattern and is synchronously wound up through the outer cylinder 203 in the middle, which facilitates rapid and synchronized traction around the wound, quickly reducing its size. Furthermore, the outer cylinder 203 has a backstop mechanism 4 during winding, eliminating the need for additional fixing methods. After traction is completed, the tension can be maintained at any time by releasing the handle.

[0045] like Figure 1 , Figures 3-5 As shown, the pressurized filling assembly 3 includes a hollow filling cover 302 connected to the lower port of the inner cylinder 202 and filled with hemostatic filling material 301, and a pressurizing knob 303 installed at the upper port of the inner cylinder 202 to press down the filling material in the hollow filling cover 302.

[0046] Instructions for using this contractile pressure bandage hemostasis device:

[0047] (1) First, unpack the sterile packaging, take out the shrink-compression bandage hemostasis device, and insert the hollow filling cover 302 of the pressure filling component 3 into the wound;

[0048] (2) Arrange multiple sets of retractor components 1 in a star-shaped radiating manner around the wound, and insert the skin retractor 102 into the skin around the wound;

[0049] (3) Rotate the outer cylinder 203 in the forward direction to synchronously rewind all the hook components 1. When the wound is in close contact with the hollow filling cover 302, press the base body 201 down with one hand to fit it against the skin, and operate the pressure knob 303 with the other hand to squeeze the hemostatic filler 301 in the hollow filling cover 302. While rapidly shrinking the wound, use the compressed hemostatic filler 301 to stop the bleeding in the deep part of the wound.

[0050] (4) After initially judging and controlling the bleeding, use gauze to initially bandage the base body 201 of this shrink-pressure bandaging hemostasis device and the wound location. Preferably, the pressure knob 303 is exposed so that after bandaging, the pressure on the wound can be further adjusted until the bleeding of the wound is controlled.

[0051] The advantages of this contractile pressure bandage hemostasis device compared to existing bandaging methods are as follows:

[0052] I. Wound contraction and hemostatic material release work together.

[0053] Current wound-closing methods are cumbersome and have limited functionality. Their winding mechanisms not only require winding each section individually, which is time-consuming and inefficient, but also prevent the wound from being filled and pressure-applied for hemostasis due to the obstruction caused by the winding device.

[0054] 1、The device has a wound contraction function. All the hook assemblies 1 are synchronously wound by the outer cylinder 203 with the reverse stopping mechanism 4, which is beneficial to quickly and synchronously pull the wound around, quickly reduce the wound, and is convenient and fast to operate, shortens the wound contraction time, stops the blood earlier, and can better protect the life safety. The reverse stopping mechanism 4 is used to prevent the outer cylinder 203 from reversing, and the tension can be maintained at any time after the pulling is completed.

[0055] 2、The device also cooperates with the wound contraction function by synchronously releasing the hemostatic filling material to achieve better hemostatic function. After the hemostatic filling material 301 preloaded in the hollow filling cover body 302 is inserted into the wound, it absorbs blood and is pressed downward by the pressure knob 303, together with the external wound contraction assembly 2, to form an internal and external cooperative compression effect, and the hemostatic effect is better; if water-absorbing and expanding filling material is used, the water-absorbing and expanding filling material will start to expand after absorbing blood, providing outward expansion force in all directions inside the wound. At this time, the wound is gathered around the hollow filling cover body 302 by the contraction assembly 2, and the internal expansion and external contraction cooperative compression method has better cooperative compression hemostatic effect. The outer cylinder 203 is used as the contraction assembly 2, which is sleeved on the inner cylinder 202 of the base body 201, and a channel for additional hemostatic filling material 301 and pressure on the hemostatic filling material 301 is reserved. For emergency situations of deep wounds and heavy bleeding, hemostatic filling material can be continuously filled to achieve better hemostatic effect.

[0056] II. Hemostatic pressure adjustment function.

[0057] The existing bandaging method is to use bandaging tape to wrap around the wound layer by layer, and use the compression force of the bandaging tape to stop bleeding. However, this traditional bandaging method has defects: (1) If the hemostatic bandaging is too tight, the over-tight bandaging tape will cause compression to the blood vessels, hinder the normal circulation of blood, and if the blood circulation is not smooth for a long time, it may cause the end of the limb to die. It can be known that the bandaging is too tight by observing the skin color (pale or purple), temperature (cool), pain, swelling, and abnormal sensation and movement. (2) If the bandaging is too loose, the bandaging tape cannot exert enough pressure on the wound, and cannot effectively compress the blood vessels, so it is difficult to achieve the purpose of stopping bleeding. It can be observed that blood continuously overflows from the wound.

[0058] After the implementation of the present contraction and compression bandaging hemostatic device, the base body 201 of the device and the wound position can be preliminarily bandaged by the bandaging tape, and then the local compression force at the hemostatic filling material 301 can be further adjusted by the pressure knob 303 to achieve better compression hemostatic effect and prevent the wound from being too loose or too tight.

[0059] For example Figures 3-5As shown, in some embodiments, the anti-reverse mechanism 4 includes a lower ratchet 401 coaxially arranged with the inner cylinder 202 and fixed on the upper surface of the base body 201, an upper ratchet 402 fixed on the lower end face of the outer cylinder 203 and meshing with the lower ratchet 401, a retaining ring 403 fixed inside the lower port of the outer cylinder 203, a compression spring 404 sleeved above the retaining ring 403 between the outer cylinder 203 and the inner cylinder 202, and a mounting ring 405 fixed outside the upper port of the inner cylinder 202 to limit the upper end face of the compression spring 404. The mounting ring 405 is fixed to the outside of the upper port of the inner cylinder 202 by threads and the connection between the two is fixed by anti-loosening glue.

[0060] The system employs a ratchet structure with upper and lower ratchet wheels. A compression spring 404 presses down on the upper ratchet 402. Without external force, the upper ratchet 402 and lower ratchet 401 remain engaged to prevent reverse rotation. When the outer cylinder 203 is manually rotated, the helical teeth of the upper and lower ratchet wheels 401 slide relative to each other. The helical teeth of the upper ratchet 402 overcome the downward pressure of the compression spring 404 and rotate to the next helical tooth, producing a clicking sound. This continues until the retraction is complete. After the operator releases the pressure, the upper ratchet 402 and lower ratchet 401 return to their engaged position under the pressure of the compression spring 404.

[0061] If it is found that the contraction is too tight and needs to be reversed, the outer cylinder 203 is pulled upward and rotated in the opposite direction at the same time. After pulling upward, the upper ratchet 402 and the lower ratchet 401 are disengaged. At this time, the outer cylinder 203 can be reversed to release the pull rope 103, and the pull ropes 103 of all hook assemblies 1 can be released synchronously.

[0062] This anti-reverse mechanism 4 is easy to operate. Whether it is forward winding or reverse release, it can be operated with one hand. After adjustment, simply release your hand to complete the fixation. No extra actions are required, and there is no high learning cost. The operation can be completed with simple instructions.

[0063] like Figures 3-5 As shown, in some embodiments, the compression spring 404 is composed of an upper washer 406, a lower washer 407, and a spring body 408 coaxially fixed between the upper washer 406 and the lower washer 407.

[0064] In order to make the outer cylinder 203 rotate more smoothly relative to the inner cylinder 202, a compression spring 404 with a flat upper washer 406 and a lower washer 407 is provided, which reduces friction and makes the rotation smoother.

[0065] like Figure 1 As shown, in some embodiments, the base body 201 is provided with a plurality of rope holes 204 for passing through the rope 103 in a star-shaped radiating manner.

[0066] To prevent the rotation of the retraction assembly 2 from affecting the pulling direction of the pull rope 103 of the hook assembly 1, a pull rope hole 204 is provided on the base body 201 for the pull rope 103 to pass through. The pull rope hole 204 can ensure that the pulling direction of each set of hook assemblies 1 is always towards the middle of the base body 201.

[0067] like Figure 3 As shown, in some embodiments, the outer circumferential side of the outer cylinder 203 is provided with multiple protruding positioning blocks 205, and a fastening through hole 206 is provided through the positioning block 205 along the tangential direction of the outer circumference of the outer cylinder 203. A fastening screw is screwed into the outer side of the positioning block 205 to press and fix the pull rope 103 that passes through the fastening through hole 206. The fastening screw can be a hand screw (not shown in the figure), which is convenient for fastening the pull rope 103 without tools.

[0068] In order to facilitate the replacement of different lengths of the pull rope 103 according to the size of the wound, the fastening through hole 206 of the through positioning block 205 is used in conjunction with the fastening screw to quickly lock and fix the pull rope 103.

[0069] This structure allows control over the initial length of the pull rope 103 in each set of pull hook components 1, enabling multiple pull hook components 1 to be distributed according to irregular wound shapes. In addition to common linear wounds and blast wounds, it can also accommodate more irregular wound shapes.

[0070] like Figure 2 , Figure 6 As shown, in some embodiments, a rotary fine-tuning mechanism 5 for adjusting the length of the pull rope 103 is installed on the hook fixing seat 101. The rotary fine-tuning mechanism 5 includes a fine-tuning knob 501, a worm gear 502, a turbine 503, a central shaft 504, and a rotating drum 505. The hook fixing seat 101 has a cavity 104 for storing the pull rope 103. The worm gear 502, which can rotate freely, is vertically installed inside the cavity 104. The upper end of the worm gear 502 is connected to the fine-tuning knob 501 above the hook fixing seat 101. The turbine 503 is rotatably installed in the cavity 104 through the horizontally arranged central shaft 504 and meshes with the worm gear 502. The rotating drum 505 is sleeved on the central shaft 504 and fixed to the turbine 503. The end of the pull rope 103 is connected to the rotating drum 505.

[0071] Utilizing the self-locking property of the worm gear 502 and turbine 503 structure, the outer end of the pull rope 103 can be wound up and adjusted via the fine-tuning knob 501. Once adjusted, the length of the pull rope 103 will not easily change due to the self-locking property, which helps maintain the tension of the pull rope 103.

[0072] The rotation fine adjustment mechanism 5 is a supplement to the contraction assembly 2. After the contraction assembly 2 synchronously winds all the pull ropes 103 of the pull hook assemblies 1, if a certain direction is too tight or too loose, the tightness can be adjusted by rotating the fine adjustment knob 501 on the corresponding pull hook assembly 1. The device has the advantages of fast synchronous contraction of the contraction assembly 2, and overcomes the defect that synchronous winding cannot individually adjust the length of a single pull rope 103. It is especially suitable for contraction of irregular wounds.

[0073] In some embodiments, the hemostatic filling material 301 adopts at least one of absorbent cotton, absorbent gauze, and water-absorbing and swelling filling material. Among them, the water-absorbing and swelling filling material includes cellulose tampon hemostatic sponge, gelatin sponge, and chitosan hemostatic sponge.

[0074] Absorbent cotton and absorbent gauze are traditional hemostatic bandaging materials. They are loose in texture, can quickly absorb blood, promote blood clotting through physical compression, can fill wounds, absorb exudates, and provide a relatively dry environment for wound healing.

[0075] The water-absorbing and swelling filling material can absorb blood and swell, providing pressure to the wound and better hemostatic effect.

[0076] Among them, common water-absorbing and swelling filling materials are as follows:

[0077] The cellulose tampon hemostatic sponge can interact with components in blood, accelerate platelet aggregation, quickly form a gel to block the wound, has good biocompatibility, and is beneficial to tissue repair.

[0078] The gelatin sponge can activate the blood clotting system, promote blood clotting, and is gradually absorbed in the wound, leaving no foreign matter and creating conditions for the growth of new tissues.

[0079] The chitosan hemostatic sponge can absorb wound exudates, accelerate hemostasis, and also has the effects of inhibiting bacteria and promoting wound healing. At the same time, the chitosan hemostatic sponge can also be used as a drug sustained-release carrier to slowly release the drug and prolong the action time of the drug.

[0080] In some embodiments, the hollow filling cover 302 is made of flexible rubber material.

[0081] The hollow filling cover 302 made of flexible rubber will elongate and thicken under the pressure applied by the pressure knob 303, so as to more fully fill the inside of the wound and better perform filling and pressure hemostasis. The hollow filling cover 302 can not only be used to store the initial hemostatic filling material 301, but also can play a guiding role when inserted into the wound. Blood can enter the inside of the hollow filling cover 302 through the hollow holes and be absorbed by the hemostatic filling material 301.

[0082] As Figure 4 , Figure 5As shown, in some embodiments, multiple vertical expansion tear lines 304 are formed on the circumference of the hollow filling cover 302.

[0083] When the pressure applied to the hemostatic filler 301 by the pressure knob 303, or the pressure reached by the hemostatic filler 301 absorbing the liquid and expanding, exceeds the preset tearing pressure, the expansion tear line 304 of the hollow filler cover 302 will be torn open by the hemostatic filler 301, and the hemostatic filler 301 can fill the wound more fully, which is more conducive to controlling bleeding.

[0084] like Figure 4 , Figure 5 As shown, in some embodiments, the pressure knob 303 includes an upper knob portion 305 and a lower threaded portion 306, and the threaded portion 306 of the pressure knob 303 is screwed into the internal thread formed on the inner wall of the upper port of the inner cylinder 202.

[0085] The simple threaded connection structure allows for easy disassembly, enabling the replenishment of hemostatic filling material 301 from the upper port of the inner cylinder 202. After replenishment, the pressure can be gradually increased by rotating the pressure knob 303 to achieve hemostasis.

[0086] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of the invention, all of which fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shrink press wrap hemostatic device, characterized by, The utility model relates to a skin retraction device, including: A retractor assembly (1) comprising a retractor fixing base (101), a skin retractor (102) fixed on the lower surface of the retractor fixing base (101), and a pull rope (103) connected with the retractor fixing base (101); A contraction assembly (2) comprising a base body (201), an inner cylinder (202) installed in the middle part of the base body (201) and penetrating up and down, and an outer cylinder (203) sleeved outside the inner cylinder (202) and limited to reverse rotation by a reverse prevention mechanism (4), the inner cavity of the inner cylinder (202) serves as a channel for the access and pressure of hemostatic filling (301), a plurality of retractor assemblies (1) are distributed in a star-shaped divergent manner around the contraction assembly (2), and the pull rope (103) of the retractor assembly (1) is connected with the outer cylinder (203), when the outer cylinder (203) rotates forward, all the pull ropes (103) are synchronously wound; A pressure filling assembly (3) comprising a hollow filling cover (302) connected at the lower port of the inner cylinder (202) and filled with hemostatic filling (301), and a pressure knob (303) installed at the upper port of the inner cylinder (202) and downward pressing the filling in the hollow filling cover (302); The reverse prevention mechanism (4) comprises a lower ratchet wheel (401) coaxially arranged with the inner cylinder (202) and fixed on the upper surface of the base body (201), an upper ratchet wheel (402) fixed on the lower end surface of the outer cylinder (203) and engaged with the lower ratchet wheel (401), a ring of blocking rings (403) fixed inside the lower port of the outer cylinder (203), a compression spring (404) sleeved above the blocking rings (403) between the outer cylinder (203) and the inner cylinder (202), and a mounting ring (405) fixed outside the upper port of the inner cylinder (202) for limiting the upper end surface of the compression spring (404); A rotary fine adjustment mechanism (5) for adjusting the length of the pull rope (103) is mounted on the retractor fixing base (101), the rotary fine adjustment mechanism (5) comprises a fine adjustment knob (501), a worm (502), a turbine (503), a middle shaft (504), and a rotating drum (505), a cavity (104) for accommodating the pull rope (103) is arranged inside the retractor fixing base (101), the worm (502) is vertically mounted in the cavity (104) and can rotate freely, the upper end of the worm (502) is connected with the fine adjustment knob (501) above the retractor fixing base (101), the turbine (503) is rotatably mounted in the cavity (104) by the horizontally arranged middle shaft (504) and engaged with the worm (502), the rotating drum (505) is sleeved on the middle shaft (504) and fixed with the turbine (503), and the end of the pull rope (103) is connected with the rotating drum (505).

2. The hemostatic device according to claim 1, wherein The compression spring (404) is composed of an upper gasket (406), a lower gasket (407), and a spring body (408) coaxially fixed between the upper gasket (406) and the lower gasket (407).

3. The hemostatic device of claim 1, wherein the device is a shrinker. A plurality of pull rope holes (204) for passing through the pull rope (103) are arranged in a star-shaped divergent manner on the base body (201).

4. The hemostatic device of claim 1, wherein the device is a shrinker. The outer cylinder (203) is provided with a plurality of protruding positioning blocks (205) on the outer circumferential side, and a fastening through hole (206) is formed along the tangential direction of the outer circumferential side of the outer cylinder (203) and penetrates the positioning block (205), and the positioning block (205) is screwed on the outside to press and fix the pull rope (103) inserted into the fastening through hole (206).

5. The hemostatic device of claim 1, wherein the device is a shrinker. The hemostatic filler (301) is at least one of absorbent cotton, absorbent gauze and water-absorbing and swelling filler.

6. The hemostatic device of claim 1, wherein the device is a shrinker. The hollow filling cover body (302) is made of flexible rubber material.

7. The hemostatic device of claim 1, wherein the device is a shrinker. A plurality of vertical expansion tear lines (304) are formed on the circumference of the hollow filling cover body (302).

8. The hemostatic device of claim 1, wherein the device is a shrinker. The pressurizing knob (303) comprises an upper knob part (305) and a lower threaded part (306), and the threaded part (306) of the pressurizing knob (303) is screwed with the internal thread formed on the inner wall of the upper port of the inner cylinder (202).

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