Shrinkage pressure bandaging hemostasis device

Abstract

The invention discloses a contraction pressure bandaging hemostasis device, and belongs to a hemostasis bandaging technology. Comprising a drag hook assembly which comprises a drag hook fixing base, a skin drag hook fixed to the lower surface of the drag hook fixing base and a pull rope connected with the drag hook fixing base; the contraction assembly comprises a base body, an inner cylinder which is installed in the middle of the base body and is through up and down, and an outer cylinder which is arranged outside the inner cylinder in a sleeving mode and is limited by a non-return mechanism to rotate reversely. The pressurizing and filling assembly comprises a hollow filling cover body which is connected to the lower port of the inner cylinder and is filled with hemostatic filler, and a pressurizing knob which is mounted at the upper port of the inner cylinder and is used for pressing down the filler in the hollow filling cover body. According to the device, all the drag hook assemblies are synchronously wound through the outer cylinder with the non-return mechanism, and the periphery of a wound can be rapidly and synchronously pulled; the device also achieves a better hemostasis function by synchronously releasing the hemostasis filler and cooperating with the wound contraction function.

Description

Technical Field

[0001] The invention relates to a contraction and compression bandage hemostasis device, belonging to the technical field of hemostasis bandage. Background Art

[0002] Bandaging a wound to stop bleeding can quickly reduce blood loss, prevent organ ischemia and damage caused by blood loss, and maintain normal physiological functions. It is the first critical step in saving lives during trauma emergency treatment. It buys time for subsequent treatments such as debridement and suturing, and reduces the risk of infection.

[0003] At present, the common methods of stopping bleeding from wounds are as follows: (1) Compression hemostasis: It is the most direct and effective method. Generally, clean gauze or cotton balls are used to press the wound for 5-10 minutes. It is suitable for bleeding from small wounds. (2) Tourniquet hemostasis: It is mainly used for bleeding from large arteries in the limbs. An elastic tourniquet is used to tie the proximal end of the wound to prevent blood loss. It should not be too loose or too tight. The duration of use should not exceed 2 hours, and it should be relaxed for a few minutes every half an hour. (3) Packing hemostasis: When bleeding from deep wounds, the wound is packed with sterile gauze or cotton balls, and then a bandage is used to apply pressure. It is suitable for areas that are difficult to compress directly, such as the armpits and groin.

[0004] In addition, for wounds such as gunshot wounds and penetrating wounds, hemostatic clips are needed to contract the skin at the edge of the wound, which can play a role similar to suture and help improve the effect of wound bandage and hemostasis.

[0005] However, existing hemostatic devices have relatively limited functions. For example, a medical circular wound contraction device (publication number CN211243536U) primarily contracts wounds to a certain extent to reduce bleeding. However, this requires individually reeling each traction wire during contraction, making the operation cumbersome. Furthermore, it is not suitable for emergency treatment of wounds such as gunshot wounds and penetrating wounds, which require not only wound contraction to reduce external bleeding but also simultaneous filling and compression hemostasis. This device not only fails to fill with hemostatic material but also blocks the wound opening. Filling effectively plugs ruptured blood vessels deep within the wound, stemming bleeding from within; compression hemostasis further increases pressure on the wound, accelerating blood clotting. Only by synergizing multiple hemostatic methods can the efficiency of hemostasis be improved in the treatment of complex trauma, buying valuable time for patients and reducing the risk of shock or even death from excessive blood loss.

[0006] Therefore, a bandaging and hemostasis device that integrates multiple functions such as contraction, filling, and pressurization has been developed. It can quickly complete the contraction of the wound, fill the hemostatic material, and perform pressurized hemostasis at the same time, so as to quickly bandage and stop bleeding on deeper wounds with large bleeding volumes. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a contraction and pressure bandage hemostasis device, which belongs to the technical field of hemostasis bandage and solves the problem that the current hemostatic clamp has a single function and is cumbersome to operate.

[0008] The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

[0009] A contraction and compression bandage hemostasis device, comprising:

[0010] A retractor assembly, comprising a retractor fixing seat, a skin retractor fixed to the lower surface of the retractor fixing seat, and a drawstring connected to the retractor fixing seat;

[0011] The retraction assembly includes a base body, an inner cylinder installed in the middle of the base body and extending vertically, and an outer cylinder sleeved outside the inner cylinder and restricted from reverse rotation by a reverse-stop mechanism. The inner cavity of the inner cylinder serves as a passage for the entry, exit, and pressurization of the hemostatic filler. Multiple groups of retractor assemblies are distributed in a star-shaped divergent manner around the retraction assembly. The retractor ropes of the retractor assemblies are connected to the outer cylinder. When the outer cylinder rotates forward, all the retractor ropes are synchronously reeled.

[0012] The pressurized filling assembly includes a hollow filling cover connected to the lower end of the inner tube and filled with hemostatic filler, and a pressurized knob installed at the upper end of the inner tube and pressing down the filler in the hollow filling cover.

[0013] Preferably, the anti-return mechanism includes a lower ratchet coaxially arranged with the inner cylinder and fixed on the upper surface of the base body, an upper ratchet fixed on the lower end surface of the outer cylinder and meshing with the lower ratchet, a circle of blocking rings fixed inside the lower port of the outer cylinder, a compression spring sleeved above the blocking ring between the outer cylinder and the inner cylinder, and a mounting ring fixed on the outside of 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 drawstring holes for passing drawstrings are distributed in a star-shaped divergent manner on the base body.

[0016] Preferably, the outer circumferential side of the outer cylinder is provided with a plurality of raised positioning blocks, and a fastening through hole is opened along the tangential direction of the outer circumference of the outer cylinder to pass through the positioning block, and a fastening screw is screwed into the outer side of the positioning block to tighten and fix the draw rope inserted into the fastening through hole.

[0017] Preferably, a rotary fine-tuning mechanism for adjusting the length of the pull rope is installed on the hook fixing seat, and the rotary fine-tuning mechanism includes a fine-tuning knob, a worm, a turbine, a central axis, and a rotating drum. A cavity for accommodating the pull rope is provided inside the hook fixing seat, and a freely rotatable worm is vertically installed inside the cavity. The upper end of the worm is connected to the fine-tuning knob above the hook fixing seat. The turbine is rotatably installed in the cavity through a horizontally arranged central axis and engages with the worm. The rotating drum is sleeved on the central axis and fixed to the turbine, and the end of the pull rope is connected to the rotating drum.

[0018] Preferably, the hemostatic filler is at least one of absorbent cotton, absorbent gauze, and water-swelling filler, wherein the water-swelling filler includes cellulose-filled hemostatic sponge, gelatin sponge, and chitosan hemostatic sponge.

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

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

[0021] Preferably, the pressurizing knob comprises an upper knob portion and a lower threaded portion, and the threaded portion of the pressurizing knob is threadedly connected to an internal thread provided on the inner wall of the upper port of the inner cylinder.

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

[0023] (1) Wound contraction function: This device uses an outer cylinder with a non-return mechanism to synchronously reel in all the hook components, which is conducive to quickly and synchronously pulling the wound around. After the pulling is completed, you can release the hand at any time to maintain the pulling force and quickly shrink the wound. The operation is convenient and fast, shortening the wound contraction time. If it is too tight, you can quickly reverse it by pulling to release the rope;

[0024] (2) Synchronous release of hemostatic material and expansion hemostasis function: the outer tube is sleeved on the inner tube of the base body, and a channel is reserved for adding additional hemostatic fillers and applying pressure to the hemostatic fillers, so that the inside of the wound can be filled with hemostatic fillers to stop bleeding; the hemostatic filler is preferably a water-absorbing and self-expanding filler that absorbs blood in the wound and continuously expands and squeezes the inside of the wound. Through the coordinated effect of external contraction and internal expansion, it has a better compression hemostasis effect;

[0025] (3) Hemostatic pressure adjustment function: By setting a pressure knob on the hemostatic filler that can adjust the degree of downward pressure, the pressure of the hemostatic filler on the wound can be changed. Compared with the existing simple hemostatic bandage method, it is more convenient to adjust the pressure locally to prevent the wound from being bandaged too loosely or too tightly, so as to achieve a better compression hemostasis effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the present invention in use state;

[0027] Figure 2 Schematic diagram of the structure of the hook assembly;

[0028] Figure 3 Schematic diagram of the exploded structure of the shrinking component and the pressurized filling component;

[0029] Figure 4 Schematic diagram of the assembly structure for the shrinking component and the pressurized filling component;

[0030] Figure 5 This is a structural diagram of the upper and lower ratchet wheels being disengaged when the outer cylinder of the contraction assembly is pulled upward;

[0031] Figure 6 This is a schematic diagram of the structure of the rotary fine-adjustment mechanism installed on the hook assembly.

[0032] In the picture:

[0033] 1. Retractor assembly; 101. Retractor fixing seat; 102. Skin retractor; 103. Retractor rope; 104. Cavity;

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

[0035] 3. Pressurized filling assembly; 301. Hemostatic filler; 302. Hollow filling cover; 303. Pressurized knob; 304. Expansion tear line; 305. Knob portion; 306. Threaded portion;

[0036] 4. Anti-return mechanism; 401. Lower ratchet; 402. Upper ratchet; 403. Blocking ring; 404. Compression spring; 405. Mounting ring; 406. Upper gasket; 407. Lower gasket; 408. Spring body;

[0037] 5. Rotary fine-tuning mechanism; 501. Fine-tuning knob; 502. Worm; 503. Turbine; 504. Center shaft; 505. Rotating drum. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further explained below with reference to specific illustrations.

[0039] like Figure 1As shown, this contraction and pressure bandage hemostasis device is primarily used to treat deep wounds with heavy bleeding. In emergency situations, it contracts, fills, and applies pressure to stop bleeding. The device is then wrapped around the innermost layer of the wound with a bandage to compress and stop bleeding. This contraction and pressure bandage hemostasis device includes a hook assembly 1 that inserts into the skin around the wound for traction, a contraction assembly 2 for synchronously contracting the pull cords 103 of multiple groups of hook assemblies 1, and a pressure filling assembly 3 for filling and applying pressure to the wound to stop bleeding.

[0040] like Figure 2 、 Figure 6 As shown, the retractor assembly 1 comprises a retractor mount 101, a skin retractor 102 secured to the underside of the retractor mount 101, and a drawstring 103 connected to the retractor mount 101. The skin retractor 102 comprises multiple medical stainless steel staples secured below one end of the retractor mount 101, while the drawstring 103 is connected to the other end of the retractor mount 101. The tips of the medical stainless steel staples are angled inward toward the wound, and the angle between the medical stainless steel staples and the bottom surface of the retractor mount 101 is preferably 45°-70°.

[0041] In order to quickly shrink the wound and control bleeding from the wound, use the skin retractor 102 to pierce the skin around the wound, gather and shrink it inward, and quickly shrink the wound. The damage to the skin caused by the skin retractor 102 is far less than that caused by heavy bleeding. Therefore, in an emergency to stop bleeding, the skin retractor 102 can be used as a stable traction anchor point to shrink the wound and stop bleeding. Compared with the current method of pulling the wound by sticking the skin, the medical stainless steel nail can withstand greater tension when pulling the skin, and the retractor assembly 1 is more firmly fixed and more difficult to loosen. The use of multiple medical stainless steel nails can share the pulling force, and the damage to the skin is further reduced. Medical stainless steel nails have good biocompatibility and generally do not cause immune responses or other adverse reactions in the human body.

[0042] like Figure 1 、 Figure 3-Figure 5 As shown, the contraction component 2 includes a base body 201, an inner cylinder 202 installed in the middle of the base body 201 and passing through from top to bottom, and an outer cylinder 203 mounted outside the inner cylinder 202 and restricted from reversal by the anti-reverse mechanism 4. The inner cavity of the inner cylinder 202 serves as a channel for the entry and exit and pressurization of the hemostatic filler 301. There are multiple groups of hook assemblies 1 distributed in a star-shaped divergent manner around the contraction component 2. The pull rope 103 of the hook assembly 1 is connected to the outer cylinder 203. When the outer cylinder 203 rotates forward, all the pull ropes 103 are synchronously reeled.

[0043] The inner cylinder 202 that penetrates from top to bottom reserves a passage for filling an additional hemostatic filler 301 in the middle of the contraction component 2 , and serves as a port for applying downward pressure to the hemostatic filler 301 .

[0044] The retractor assembly 1 is distributed in a star-shaped divergent pattern and is synchronously retracted by the central outer cylinder 203, facilitating rapid and simultaneous retraction of the wound's periphery, rapidly reducing the wound. Furthermore, the outer cylinder 203 retracts with a backstop 4, eliminating the need for additional fixings. Once retraction is complete, the retractor can be released at any time to maintain tension.

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

[0046] How to use this contraction and compression bandage hemostasis device:

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

[0048] (2) Arrange multiple groups of retractor assemblies 1 in a star-shaped divergent manner around the wound, and penetrate the skin around the wound through the skin retractor 102;

[0049] (3) Rotate the outer cylinder 203 forward to synchronously retract 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 to the skin, and use the other hand to operate the pressure knob 303 to squeeze the hemostatic filler 301 in the hollow filling cover 302. While quickly shrinking the wound, the compressed hemostatic filler 301 is used to stop bleeding in the deep part of the wound.

[0050] (4) After preliminarily judging that the bleeding situation is under control, use bandage gauze to preliminarily bandage the base body 201 of the contraction and pressure bandage hemostasis device and the wound position. Preferably, the pressure knob 303 is exposed so that after the bandage is completed, the pressure on the wound can be further adjusted until the bleeding situation of the wound is controlled.

[0051] The advantages of this contraction and compression bandage hemostasis device over existing bandaging methods are as follows:

[0052] 1. Wound contraction and hemostatic material release work together.

[0053] Current wound contraction methods are complex and limited in function. Not only does the rewinding mechanism require rewinding the wound piece by piece, which is time-consuming and inefficient, but it also prevents filling the wound and applying pressure to stop bleeding due to obstruction by the rewinding mechanism.

[0054] 1. This device has a wound contraction function. The outer cylinder 203, equipped with a backstop mechanism 4, synchronously retracts all retractor assemblies 1, facilitating rapid and coordinated retraction around the wound, rapidly reducing the wound size. This convenient and quick operation shortens wound contraction time, stops bleeding earlier, and better protects life safety. The backstop mechanism 4 prevents reverse rotation of the outer cylinder 203. Once retraction is complete, the retractor can be released at any time to maintain tension.

[0055] 2. This device also achieves enhanced hemostasis by synchronously releasing a hemostatic filler, collaborating with the wound contraction function. After the hemostatic filler 301 pre-loaded within the hollow filling housing 302 is inserted into the wound, it absorbs blood and, through downward pressure applied by the pressure knob 303, works together with the external wound contraction component 2 to create a synergistic internal and external compression effect, resulting in a more effective hemostasis. If a water-swelling filler is used, it will absorb blood and begin to expand, providing an outward expansion force in all directions within the wound. At this point, the contraction component 2 pulls the wound inward around the hollow filling housing 302. This coordinated pressure of internal expansion and external contraction achieves an even better synergistic compression hemostasis effect. An outer cylinder 203 that passes through from top to bottom is used as the contraction component 2, which is sleeved on the inner cylinder 202 of the base body 201. A channel is reserved for adding additional hemostatic filler 301 and applying pressure to the hemostatic filler 301. For emergency situations with deep wounds and heavy bleeding, hemostatic filler can be continuously loaded to achieve better hemostatic effect.

[0056] 2. Hemostasis pressure regulation function.

[0057] The existing bandaging method is to wrap a bandage layer by layer around the wound and use the pressure of the bandage to stop bleeding. However, this traditional bandaging method has defects: (1) If the bandage is too tight, the overly tight bandage will compress the blood vessels, hinder the normal circulation of blood, and thus affect blood circulation. If the blood circulation is not smooth for a long time, it may cause necrosis of the extremities. The bandage can be observed by observing the skin color (pale or cyanosis), temperature (cooling), increased pain, swelling, and sensory and motor abnormalities to know that the bandage is too tight. (2) If the bandage is too loose, the bandage cannot exert enough pressure on the wound and cannot effectively compress the blood vessels, making it difficult to achieve the purpose of stopping bleeding. It can be observed that blood continues to overflow from the wound.

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

[0059] like Figure 3-Figure 5As shown, in some embodiments, the anti-return 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 surface of the outer cylinder 203 and engaged with the lower ratchet 401, a circle of blocking rings 403 fixed inside the lower port of the outer cylinder 203, a compression spring 404 above the blocking ring 403 between the outer cylinder 203 and the inner cylinder 202, and a mounting ring 405 fixed on the outside of the upper port of the inner cylinder 202 for limiting the upper end surface 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 outer cylinder 203 is manually rotated, with the upper and lower ratchet wheels 402 always engaged, using a compression spring 404 to press down on the upper ratchet wheel 402. This prevents reverse rotation. When the outer cylinder 203 is manually rotated, the upper and lower ratchet wheels 401 slide against each other, causing the upper ratchet teeth of the upper ratchet wheel 402 to overcome the downward pressure of the compression spring 404 and rotate to the next ratchet tooth, making a clicking sound. This is until the operator determines that contraction is complete and releases their grip, at which point the upper ratchet wheel 402 and lower ratchet wheel 401 resume engagement under the downward 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 drawstring 103, and the drawstrings 103 of all hook assemblies 1 can be released synchronously.

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

[0063] like Figure 3-Figure 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 gasket 406 and a lower gasket 407 is provided, so that during rotation, the friction force is smaller and the rotation is smoother.

[0065] like Figure 1 As shown, in some embodiments, a plurality of rope holes 204 for passing the rope 103 are distributed in a star-shaped divergent manner on the base body 201 .

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

[0067] like Figure 3 As shown, in some embodiments, a plurality of raised positioning blocks 205 are provided on the outer circumference of the outer cylinder 203. Fastening holes 206 are provided tangentially along the outer circumference of the outer cylinder 203, penetrating the positioning blocks 205. Fastening screws are screwed into the outer sides of the positioning blocks 205 to tighten and secure the draw cord 103 inserted into the fastening holes 206. The fastening screws can be thumb screws (not shown), making it convenient to tighten the draw cord 103 without tools.

[0068] In order to facilitate replacement of the drawstring 103 of different lengths according to the size of the wound, the drawstring 103 is quickly locked and fixed by using the fastening through hole 206 penetrating the positioning block 205 in conjunction with the fastening screw.

[0069] This structure can be used to control the initial length of the pull rope 103 of each set of hook assemblies 1, and multiple hook assemblies 1 can be distributed according to irregular wound shapes. In addition to common linear wounds and explosive wounds, it can also adapt to 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, and the rotary fine-tuning mechanism 5 includes a fine-tuning knob 501, a worm 502, a turbine 503, a central axis 504, and a rotating drum 505. A cavity 104 for accommodating the pull rope 103 is provided inside the hook fixing seat 101, and a freely rotatable worm 502 is vertically installed inside the cavity 104. The upper end of the worm 502 is connected to the fine-tuning knob 501 above the hook fixing seat 101, and the turbine 503 is rotatably installed in the cavity 104 through the horizontally arranged central axis 504 and engages with the worm 502. The rotating drum 505 is sleeved on the central axis 504 and fixed to the turbine 503, and the end of the pull rope 103 is connected to the rotating drum 505.

[0071] By utilizing the self-locking property of the worm 502 and the worm gear 503, the outer end of the pull cord 103 can be reeled in and adjusted by the fine-tuning knob 501. Once the adjustment is completed, the length of the pull cord 103 will not change easily due to the self-locking property, which helps maintain the tension of the pull cord 103.

[0072] The rotary fine-adjustment mechanism 5 complements the retraction assembly 2. After the retraction assembly 2 synchronously rewinds the drawstrings 103 of all hook assemblies 1, if tension is too tight or too loose in any direction, it can be adjusted by rotating the fine-adjustment knob 501 on the corresponding hook assembly 1. This device combines the advantages of rapid, synchronous retraction of the retraction assembly 2 with the drawstring length adjustment limitation of synchronous retraction, which overcomes the limitation of individually adjusting the length of a single drawstring 103. It is particularly suitable for retraction of irregular wounds.

[0073] In some embodiments, the hemostatic filler 301 is at least one of absorbent cotton, absorbent gauze, and water-swelling filler, wherein the water-swelling filler includes cellulose-filled hemostatic sponge, gelatin sponge, and chitosan hemostatic sponge.

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

[0075] The water-swellable filler can expand after absorbing blood, apply pressure to the wound, and achieve better hemostasis effect.

[0076] Among them, the common water-absorbing and expanding fillers are as follows:

[0077] Cellulose-filled hemostatic sponge can interact with components in the blood, accelerate platelet aggregation, quickly form gel to seal the wound, has good biocompatibility, and is beneficial to tissue repair.

[0078] Gelatin sponge can activate the coagulation system, promote blood coagulation, and be gradually absorbed at the wound without leaving any foreign matter, creating conditions for the growth of new tissue.

[0079] Chitosan hemostatic sponge can absorb wound exudate, accelerate hemostasis, and also has the effect of antibacterial and promoting wound healing. At the same time, chitosan hemostatic sponge can also be used as a drug sustained-release carrier to slowly release drugs and prolong the drug's action time.

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

[0081] The hollow filling cover 302, made of flexible rubber, expands and thickens when pressure is applied by the pressure knob 303, allowing it to more fully fill the wound and effectively stop bleeding. The hollow filling cover 302 not only stores the initial hemostatic filler 301 but also serves as a guide during insertion into the wound. Blood can enter the hollow filling cover 302 through the hollow holes and be absorbed by the hemostatic filler 301.

[0082] like Figure 4 、 Figure 5As shown, in some embodiments, a plurality of vertical expansion tear lines 304 are provided on the circumference of the hollow filling cover 302 .

[0083] When the pressure applied by the pressure knob 303 to the hemostatic filler 301, or the pressure reached by the hemostatic filler 301 when it absorbs liquid and expands, exceeds the preset rupture pressure, the expansion tear line 304 of the hollow filling cover 302 will be torn apart by the hemostatic filler 301, and the hemostatic filler 301 can be more fully filled inside the wound, which is more conducive to controlling bleeding.

[0084] like Figure 4 、 Figure 5 As shown, in some embodiments, the pressurizing knob 303 includes an upper knob portion 305 and a lower threaded portion 306 , and the threaded portion 306 of the pressurizing knob 303 is threadedly connected to the internal thread opened on the inner wall of the upper end of the inner cylinder 202 .

[0085] A simple threaded connection structure is adopted, which can be easily disassembled and the hemostatic filler 301 can be replenished from the upper end of the inner tube 202 to the inside. After replenishment, the pressure can be gradually increased by rotating the pressure knob 303 to stop bleeding.

[0086] The above shows and describes 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. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are within the scope of protection claimed by the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A contraction and compression bandage hemostasis device, characterized in that: include: A retractor assembly (1) comprises a retractor fixing seat (101), a skin retractor (102) fixed to the lower surface of the retractor fixing seat (101), and a drawstring (103) connected to the retractor fixing seat (101); The contraction assembly (2) comprises a base body (201), an inner cylinder (202) installed in the middle of the base body (201) and extending vertically therethrough, and an outer cylinder (203) sleeved outside the inner cylinder (202) and restricted from reverse rotation by a reverse-stop mechanism (4), wherein the inner cavity of the inner cylinder (202) serves as a passage for the entry and exit of a hemostatic filler (301) and for pressurization, and a plurality of groups of hook assemblies (1) are distributed around the contraction assembly (2) in a star-shaped divergent manner, wherein the pull ropes (103) of the hook assemblies (1) are connected to the outer cylinder (203), and when the outer cylinder (203) rotates forward, all the pull ropes (103) are synchronously reeled; The pressurized filling assembly (3) comprises a hollow filling cover (302) connected to the lower end of the inner cylinder (202) and filled with a hemostatic filler (301), and a pressurized knob (303) installed at the upper end of the inner cylinder (202) and pressing down the filler in the hollow filling cover (302).

2. A contraction and compression bandage hemostasis device according to claim 1, characterized in that: The anti-return mechanism (4) comprises 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 surface of the outer cylinder (203) and meshed with the lower ratchet (401), a circle of blocking rings (403) fixed inside the lower end of the outer cylinder (203), a compression spring (404) sleeved above the blocking ring (403) between the outer cylinder (203) and the inner cylinder (202), and a mounting ring (405) fixed outside the upper end of the inner cylinder (202) and used to limit the upper end surface of the compression spring (404).

3. The hemostatic device according to claim 2, characterized in that: 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).

4. The hemostatic device according to claim 1, characterized in that: The base body (201) is provided with a plurality of rope holes (204) for passing the rope (103) in a star-shaped divergent manner.

5. The hemostatic device for compression bandaging according to claim 1, characterized in that: The outer circumferential side of the outer cylinder (203) is provided with a plurality of raised positioning blocks (205), and a fastening through hole (206) penetrating the positioning block (205) is opened 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 tighten and fix the draw rope (103) inserted into the fastening through hole (206).

6. The contraction and compression bandage hemostasis device according to claim 1, characterized in that: The hook fixing seat (101) is provided with a rotary fine-tuning mechanism (5) for adjusting the length of the pull rope (103), the rotary fine-tuning mechanism (5) comprising a fine-tuning knob (501), a worm (502), a turbine (503), a central shaft (504), and a rotating drum (505). The hook fixing seat (101) is provided with a cavity (104) for receiving the pull rope (103), and a self-adjusting mechanism (5) is vertically installed in the cavity (104). The worm (502) rotates, the upper end of the worm (502) is connected to the fine adjustment knob (501) above the hook fixing seat (101), the turbine (503) is rotatably installed in the cavity (104) through the central axis (504) arranged in the horizontal direction and meshes with the worm (502), the rotating drum (505) is sleeved on the central axis (504) and fixed to the turbine (503), and the end of the pull rope (103) is connected to the rotating drum (505).

7. The hemostatic device for compression bandaging according to claim 1, characterized in that: The hemostatic filler (301) is at least one of absorbent cotton, absorbent gauze, and water-swelling filler.

8. The hemostatic device for compression bandaging according to claim 1, characterized in that: The hollow filling cover (302) is made of flexible rubber material.

9. The hemostatic device for compression bandaging according to claim 1, characterized in that: A plurality of vertical expansion tear lines (304) are provided on the circumference of the hollow filling cover (302).

10. The contraction and compression bandage hemostasis device according to claim 1, characterized in that: The pressurizing knob (303) comprises an upper knob portion (305) and a lower threaded portion (306). The threaded portion (306) of the pressurizing knob (303) is threadedly connected to an internal thread provided on the inner wall of the upper end of the inner cylinder (202).

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