Hemostasis device for hematology department nursing
The hemostatic device, with its locking mechanism and adjustable retaining ring design, solves the problems of non-adjustable pressure and cumbersome replacement in existing devices, achieving stable pressure control and convenient replacement of hemostatic cotton, thus improving hemostasis and patient comfort.
Patent Information
- Application Number
- CN202511478797.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-16
- Publication Date
- 2025-11-14
AI Technical Summary
Existing hemostatic devices cannot adjust the pressure according to the patient's actual bleeding situation, resulting in excessive pressure that can easily damage tissues or insufficient pressure that cannot effectively stop bleeding. At the same time, changing hemostatic cotton is a cumbersome operation that reduces patient comfort.
It adopts a locking mechanism and an adjustable retaining ring design, combining mechanical pressure and low-temperature cold compress. The locking mechanism stabilizes the pressure and the adjustable retaining ring allows for easy replacement of hemostatic cotton, achieving controllable pressure and rapid replacement.
It enables control of pressure based on individual patient differences and bleeding conditions, avoiding tissue damage, improving hemostasis speed and comfort, and simplifying the process of changing hemostatic cotton.
Smart Images
Figure CN120938532A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical and nursing technology, and more specifically, to a hemostatic device for hematology nursing. Background Technology
[0002] After blood collection, in order to prevent blood from seeping out of the puncture site, medical staff need to apply pressure to the puncture site with hemostatic cotton to stop the bleeding. However, for some patients with limited hand mobility, it is not possible to apply pressure. Therefore, special pressure hemostasis devices have been developed.
[0003] Existing hemostatic devices mostly adopt a fixed pressure design, which cannot be adjusted according to the patient's actual bleeding situation. Excessive pressure can easily lead to local tissue damage or patient discomfort, while insufficient pressure cannot effectively stop bleeding, prolonging the hemostasis time and reducing patient comfort. At the same time, existing devices mostly use suturing, gluing, or embedding to fix the hemostatic cotton, which is cumbersome to change and increases the workload of medical staff. Summary of the Invention
[0004] The purpose of this invention is to provide a hemostatic device for hematology nursing, which employs a locking mechanism and an adjustable retaining ring, thereby solving the problems of patient discomfort and cumbersome operation when changing hemostatic cotton in related technologies.
[0005] To achieve the above objectives, the present invention provides the following technical solution: A hemostatic device for hematology nursing includes a housing and a hemostatic module, with connecting wrist straps attached to both sides of the housing; The hemostasis module includes a hollow cylinder with a pressure block at its bottom. The pressure block has an internal cavity that communicates with the outside through a water inlet. A retaining ring is movably mounted on the pressure block and is connected to an adjustment mechanism. A through hole is provided on the housing, through which the hollow cylinder of the hemostasis module passes and can move axially. A limit ring is fixedly mounted on the hollow cylinder and is connected to the housing through an elastic element. A locking mechanism, disposed inside the housing, is used to lock the position of the pressure block after it is pressed down. The locking mechanism includes a release button for releasing the locking of the pressure block position.
[0006] Optionally, the outer diameter of the limiting ring is larger than the diameter of the through hole, and the side wall of the limiting ring is provided with retractable locking teeth, which mesh with the rack, and the rack is erected inside the housing.
[0007] Optionally, the limiting ring has a notch, the locking teeth are retractably mounted in the notch via a telescopic rod, and a first return spring is sleeved on the telescopic rod; the release button is connected to a push plate via a third connecting rod, and a second return spring is sleeved on the third connecting rod; the rack has a through groove communicating with its teeth, and the push plate is slidably mounted in the through groove.
[0008] Optionally, the outer wall of the housing is provided with a mounting groove, the release button is disposed in the mounting groove, a slot is provided on one side of the release button, and the connecting rod is fixed to the bottom of the slot; the inner wall of the annular notch is provided with a sliding groove, and sliders are provided on both sides of the locking teeth, and are slidably connected to the annular notch through the sliders.
[0009] Optionally, the adjusting mechanism includes a gear set, a lead screw, and a threaded block. The gear set is driven by a rotating shaft, one end of which is connected to a knob, and the other end is connected to the input gear of the gear set. The output gear of the gear set is coaxially connected to the lead screw, and the threaded block is threadedly engaged with the lead screw. A push rod is fixedly connected to the threaded block, and the push rod is fixedly connected to the connecting plate of the retaining ring.
[0010] Optionally, the housing has two optical axes mirrored inside, the limiting ring has a connecting hole, the optical axes pass through the connecting hole, and the elastic element is a helical spring that is respectively sleeved on the two optical axes.
[0011] Optionally, the pressure block is fixed to the bottom surface of the hollow cylinder by a connecting rod. Connecting rods are provided at both ends of the connecting plate. A connecting block is mirrored on the outer wall of the pressure block. The rod part of the connecting rod passes through the through hole of the connecting block. The end of the connecting rod away from the connecting plate is fixedly connected to the top surface of the retaining ring.
[0012] Optionally, the knob is rotatably mounted on the top of the hollow cylinder, and the knob has anti-slip ridges.
[0013] Optionally, the bottom of the pressure block is provided with an opening and is detachably connected to a cover plate.
[0014] Optionally, the housing has hinges on both sides, the wristband is hinged to the hinges, and the end of the wristband away from the hinges has a Velcro strap.
[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The locking mechanism can automatically lock the position of the hemostasis module after pressure is applied to ensure stable and continuous pressure. The locking can be released instantly by pressing the release button, allowing the module to quickly reset under the action of the elastic element. Medical staff can control the pressure according to the individual differences of patients and the bleeding situation, effectively avoiding tissue damage or ineffective hemostasis caused by fixed pressure. 2. The pressure block has an internal cavity that can be filled with ice water. Combining the dual physical effects of mechanical pressure and low-temperature cold compress, it can significantly promote vasoconstriction, reduce swelling and pain in patients, and thus greatly improve the speed of hemostasis and comfort. At the same time, the pressure block is equipped with a retaining ring for securing the hemostatic cotton. The adjustment mechanism connected to the retaining ring makes the removal and placement of the hemostatic cotton quick and easy. Attached Figure Description
[0016] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the hemostasis module structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the housing of the present invention; Figure 4 This is a schematic diagram of the internal structure of the hemostasis module of the present invention; Figure 5 for Figure 1 Enlarged view of the local structure at point A; Figure 6 for Figure 2 Enlarged view of the local structure at point B; Figure 7 for Figure 3 Enlarged view of the local structure at point C; Figure 8 for Figure 4 Enlarged view of the local structure at point D.
[0017] The above figures include the following reference numerals: 1-Housing, 11-Hinge, 12-Connecting wristband, 121-Hook and loop fastener, 13-Through hole, 14-Optical axis, 141-Elastic element, 15-Mounting groove, 2-Hemostasis module, 21-Pressure block, 211-Water inlet, 212-Cover plate, 213-Connecting block, 214-Connecting rod, 22-Snap ring, 221-Connecting plate, 222-Connecting rod II, 23-Knob, 24-Limiting ring, 241-Ring notch, 242-Slide groove, 3-Locking mechanism, 31-Snap tooth, 311-Telescopic rod, 32-Release button, 321-Connecting rod III, 322-Push plate, 323-Snap groove, 33-Rack, 4-Adjusting mechanism, 41-Gear set, 42-Lead screw, 43-Threaded block, 44-Rotating shaft, 45-Push rod. Detailed Implementation
[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below in conjunction with embodiments. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.
[0019] The present invention will be further explained below with reference to specific embodiments: See Figure 1 This embodiment of a hemostatic device for hematology nursing includes a housing 1 and a hemostatic module 2. The housing 1 has wristbands 12 connected to both sides. The hemostatic module 2 includes a hollow cylinder with a pressure block 21 at its bottom. The pressure block 21 has an internal cavity that communicates with the outside via a water inlet 211. A retaining ring 22 is movably mounted on the pressure block 21 and is connected to an adjustment mechanism 4. The housing 1 has a through hole 13 through which the hollow cylinder of the hemostatic module 2 passes and can move axially. A limiting ring 24 is fixedly mounted on the hollow cylinder and connected to the housing 1 via an elastic element 141. A locking mechanism 3 is located inside the housing 1 and is used to lock the position of the pressure block 21 after it is pressed down. The locking mechanism 3 includes a release button 32 for releasing the lock on the position of the pressure block 21.
[0020] Among them, see Figure 1 The housing 1 is a hollow circular structure with symmetrical hinges 11 at both ends of its outer side wall. Each hinge 11 is hinged to a connecting wristband 12 via a pin. The connecting wristband 12 is made of flexible medical fabric, and a Velcro 121 is fixedly attached to the end of the connecting wristband 12 away from the hinge 11. The two connecting wristbands 12 each have a male and female portion of the Velcro 121. The housing 1 can be fixed to the patient's wrist by the fastening of the Velcro 121. A circular through hole 13 is provided in the center of the top surface of the housing 1, extending to the interior and bottom surface. This through hole 13 is used to insert the hemostasis module 2.
[0021] Among them, see Figure 2 The hemostasis module 2 comprises a hollow cylinder, which serves as the main body of the hemostasis module 2. The entire hollow cylinder passes through the through-hole 13 of the housing 1 and can slide up and down along the axis of the through-hole 13. The diameter of the main body of the hemostasis module 2 is slightly smaller than the diameter of the through-hole 13. One end of a connecting rod 214 is fixedly connected to the bottom of the hollow cylinder, and the other end of the connecting rod 214 is vertically fixed to the center of the top surface of the pressure block 21. A total of four connecting rods 214 are arranged in a circular array. The pressure block 21 is a cylindrical cavity structure with an open bottom, forming an internal cavity for containing ice water. (See reference...) Figure 5A water inlet 211 is provided on the upper part of the side wall of the pressure block 21. The water inlet 211 communicates with the cavity of the pressure block 21, and a rubber stopper (not shown in the figure) is provided at the water inlet 211 to seal the cavity. The water inlet 211 is a recessed design; see reference Figure 8 Meanwhile, a cover plate 212 is detachably connected to the bottom opening of the pressure block 21 via a snap-fit structure. The cover plate 212 is made of medical soft material to avoid damaging the patient's skin when pressing. The cover plate also facilitates cleaning of the inside of the pressure block 21. Two connecting blocks 213 are also fixedly mounted on the outer side wall of the pressure block 21. Each connecting block 213 has a through circular hole in the middle.
[0022] For further details, please refer to [link / reference]. Figure 2 A limiting ring 24 is fixedly fitted in the middle of the outer wall of the hollow cylinder. The limiting ring 24 is an annular structure with an outer diameter larger than the diameter of the through hole 13. Two connecting holes adapted to the optical axis 14 are opened on its annular wall. The optical axis 14 is fixedly set in the inner bottom surface of the housing 1. The axes of the two vertical optical axes 14 are parallel to the axis of the through hole 13, and each optical axis 14 is fitted with an elastic element 141. The elastic element 141 is a helical spring. The two optical axes 14 are respectively inserted into the corresponding connecting holes, so that the limiting ring 24 of the hollow cylinder can slide along the optical axis 14. One end of the elastic element 141 fitted on the optical axis 14 abuts against the inner bottom surface of the housing 1, and the other end abuts against the bottom surface of the limiting ring 24. Through the elastic force of the elastic element 141, the hemostasis module 2 can be driven to return to its original position.
[0023] Among them, see Figure 2 and Figure 3 The locking mechanism 3 is used to lock the position of the hemostasis module 2 after it is pressed down. It includes a locking tooth 31, a release button 32, and a rack 33. (See also...) Figure 6 Two annular notches 241 are formed on the side wall of the limiting ring 24, and two sliding grooves 242 are symmetrically formed on the inner side wall of each annular notch 241. A slider (not shown in the figure) is integrally formed on both sides of the locking tooth 31. The slider and the sliding groove 242 are slidably engaged, so that the locking tooth 31 can slide along the sliding groove 242 in the annular notch 241. At the same time, one end of the telescopic rod 311 is fixedly connected to the inner end of the locking tooth 31 (the end away from the tooth). The other end of the telescopic rod 311 passes through the blind hole formed in the inner wall of the annular notch 241. A return spring is sleeved on the telescopic rod 311. One end of the return spring abuts against the inner end of the locking tooth 31, and the other end abuts against the inner wall of the annular notch 241. When the return spring is in the natural state, it can push the outer end of the locking tooth 31 out of the annular notch 241.
[0024] The rack 33 is a vertically arranged elongated structure, with two racks positioned in a mirror image. One side of each rack has integrally formed teeth. The two ends of the rack 33 are fixedly connected to the top and bottom surfaces inside the housing 1, respectively, with the teeth of the rack 33 facing the locking teeth 31. The outer end of each locking tooth 31 engages with the teeth of one rack 33, achieving position locking of the hemostasis module 2 after it is pressed down. (See reference...) Figure 7 Due to the tooth shape of the locking teeth 31 and the rack 33, only the entire hemostasis module 2 is allowed to be pressed down. When it is moved up to reset, the locking needs to be released.
[0025] In addition, two mounting slots 15 are provided on the outer side wall of the housing 1. The mounting slots 15 are used to accommodate the release button 32 of the locking mechanism 3. The release button 32 is a rectangular block structure, which is embedded in the mounting slot 15 of the housing 1. In the unpressed state, the outer end of the release button 32 protrudes from the outer side wall of the housing 1. The release button 32 can be pressed up to the point where its outer end is flush with the outer side wall of the housing 1. A slot 323 is provided on the inner end of the release button 32 (the end facing the inside of the housing 1). The bottom of the slot 323 is fixedly connected to a connecting rod. One end of the connecting rod 321 extends horizontally to the rack 33 and is fixedly connected to the push plate 322, which is a thin sheet structure. A reset spring 2 is also sleeved on the connecting rod 321. One end of the reset spring 2 abuts against the bottom of the slot 323 of the release button 32, and the other end abuts against the back side wall (the side away from the teeth) of the rack 33. When the reset spring 2 is in the natural state, it can drive the release button 32 to reset, that is, the outer end of the release button 32 protrudes from the outer side wall of the housing 1. A through groove adapted to the push plate 322 is provided in the middle of the rack 33. The through groove extends along the length of the rack 33 and communicates with the teeth of the rack 33. The push plate 322 is slidably disposed in the through groove. When the release button 32 is pressed, the connecting rod 321 drives the push plate 322 to slide along the through groove. The end of the push plate 322 can push the outer end of the locking tooth 31, so that the locking tooth 31 compresses the reset spring and retracts into the ring notch 241, releasing the engagement between the locking tooth 31 and the rack 33. At this time, the hemostasis module 2 can automatically reset upward under the action of the elastic element 141.
[0026] Among them, see Figure 4 The adjusting mechanism 4 is used to drive the retaining ring 22 to move up and down, so as to tighten or loosen the hemostatic cotton. The retaining ring 22 is a circular ring structure, and its inner ring diameter is larger than the outer diameter of the pressure block 21. The central axis of the retaining ring 22 coincides with that of the pressure block 21. The retaining ring 22 is connected to the pressure block 21 in a height-lowering manner through the adjusting mechanism 4. When the retaining ring 22 is raised to a certain position, its inner side wall is in contact with the outer side wall of the pressure block 21, so as to tighten or loosen the hemostatic cotton placed on the bottom surface of the pressure block 21. The adjustment mechanism 4 includes a gear set 41, a lead screw 42, a threaded block 43, a rotating shaft 44, and a push rod 45 disposed inside the hollow cylinder. A mounting hole is provided at the top of the hollow cylinder, and a knob 23 is rotatably mounted in this mounting hole via a bearing (not shown). The outer end of the knob 23 extends beyond the top of the hollow cylinder, and the outer end surface of the knob 23 is integrally formed with anti-slip textures. The bottom surface of the knob 23 is fixedly connected to one end of the rotating shaft 44, and the other end of the rotating shaft 44 extends along the axis of the hemostasis module 2 and is fixedly connected to the input gear of the gear set 41. The gear set 41 consists of two meshing spur gears, and its output gear is coaxially fixedly connected to the top of the lead screw 42. The lead screw 42 is vertically arranged along the axis of the hemostasis module 2, and the bottom end of the lead screw 42 is rotatably connected to the inner bottom surface of the hollow cylinder via a bearing. The threaded block 43 has an internal threaded hole in the middle that is adapted to the lead screw 42. The threaded block 43 is threadedly engaged with the lead screw 42 through the internal threaded hole. A push rod 45 is fixedly connected to the side of the threaded block 43 facing the bottom surface of the housing 1. The push rod 45 extends in the vertical direction and the end of the push rod 45 passes through the bottom wall of the hollow cylinder and is fixedly connected to the connecting plate 221 of the retaining ring 22. The connecting plate 221 is a strip-shaped structure, with a connecting rod 222 vertically fixed to the bottom surface at both ends. The two connecting rods 222 are respectively inserted into the through holes of the two connecting blocks 213 on the outer side wall of the pressure block 21, and the connecting rods 222 can slide up and down along the through holes of the connecting blocks 213. The end of the connecting rod 222 away from the connecting plate 221 is fixedly connected to the top surface of the retaining ring 22. When the retaining ring 22 is lowered to the lowest point under the drive of the adjusting mechanism 4, the bottom surface of the connecting plate 221 is in contact with the top surface of the pressure block 21. At this time, the retaining ring 22 and the pressure block 21 are not on the same horizontal plane. That is, at this time, the lower edge of the retaining ring 22 is lower than the bottom surface of the pressure block 21, and a gap is left between the retaining ring 22 and the pressure block 21 for inserting a hemostatic cotton pad.
[0027] The working principle of this embodiment is as follows: When in use, rotating the knob 23 drives the rotating shaft 44 to rotate, the rotating shaft 44 drives the gear set 41 to rotate, the gear set 41 drives the lead screw 42 to rotate, the lead screw 42 and the threaded block 43 are threadedly engaged, causing the threaded block 43 to move axially along the lead screw 42, the threaded block 43 drives the push rod 45 to move synchronously, the push rod 45 pushes the connecting plate 221, the connecting plate 221 drives the retaining ring 22 to descend along the outer wall of the pressure block 21 through the connecting rod 222, placing the hemostatic cotton at the bottom of the pressure block 21, and then rotating the knob 23 in the opposite direction causes the retaining ring 22 to rise until the retaining ring 22 and the pressure block 21 engage to clamp the hemostatic cotton. Then, an appropriate amount of ice water is injected into the internal cavity of the pressure block 21 through the water injection port 211. After the injection is completed, the water injection port 211 is sealed with a rubber stopper.
[0028] Next, wrap the housing 1 around the patient's wrist with the connecting wristband 12, and use the Velcro 121 at the ends of the two connecting wristbands 12 to fix the housing 1 on the patient's wrist, so that the cover plate 212 at the bottom of the pressure block 21 is precisely aligned with the bleeding point, and then press down on the entire hemostasis module 2. The limiting ring 24 of the hemostasis module 2 slides downward along the optical axis 14. Simultaneously, the limiting ring 24 compresses the elastic element 141. During the sliding process of the limiting ring 24, the retaining teeth 31 within the notch 241 of the upper ring of the limiting ring 24 extend out of the notch 241 under the elastic force of the return spring and engage with the rack 33 erected inside the housing 1, thereby locking the position of the hemostasis module 2. This allows the pressure block 21 to continuously apply pressure to the bleeding point. Simultaneously, the ice water inside the cavity of the pressure block 21 transmits low temperature through the cover plate 212, promoting vasoconstriction at the bleeding point, improving the hemostasis effect, and reducing the patient's swelling and pain. Once hemostasis is complete... Press the release button 32 in the mounting groove 15 on the outer wall of the housing 1. The release button 32 pushes the push plate 322 along the through groove on the rack 33 through the connecting rod 321. The push plate 322 pushes the locking tooth 31 to compress the reset spring and retract it into the ring notch 241, releasing the engagement and locking between the locking tooth 31 and the rack 33. At this time, the compressed elastic element 141 restores its deformation and pushes the limit ring 24 to move upward along the optical axis 14. The limit ring 24 drives the hemostasis module 2 to rise and reset synchronously. Finally, rotate the knob 23 again to make the locking ring 22 descend, remove the used hemostatic cotton, and complete the entire hemostasis operation process.
[0029] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.
[0030] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.
[0031] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of the present invention.
Claims
1. A hemostatic device for hematology nursing, characterized in that: It includes a housing (1) and a hemostasis module (2), and the housing (1) is connected to a connecting wristband (12) on both sides. The hemostasis module (2) includes a hollow cylinder with a pressure block (21) at its bottom. The pressure block (21) has a cavity inside, which is connected to the outside through a water inlet (211). A retaining ring (22) is provided on the pressure block (21) and is connected to the adjustment mechanism (4). A through hole (13) is provided on the housing (1). The hollow cylinder of the hemostasis module (2) passes through the through hole (13) and can move along its axial direction. A limiting ring (24) is fixedly provided on the hollow cylinder and is connected to the housing (1) through an elastic element (141). Locking mechanism (3), which is located inside housing (1), is used to lock the position of the pressure block (21) after it is pressed down. The locking mechanism (3) includes a release button (32) for releasing the lock on the position of the pressure block (21).
2. The hemostatic device for hematology nursing care according to claim 1, characterized in that: The outer diameter of the limiting ring (24) is larger than the diameter of the through hole (13). The side wall of the limiting ring (24) is provided with a retractable locking tooth (31). The locking tooth (31) meshes with the rack (33). The rack (33) is erected inside the housing (1).
3. A hemostatic device for hematology nursing care according to claim 2, characterized in that: The limiting ring (24) has a ring notch (241), and the locking tooth (31) is telescopically disposed in the ring notch (241) via a telescopic rod (311). A first reset spring is sleeved on the telescopic rod (311). The release button (32) is connected to a push plate (322) via a connecting rod (321). A second reset spring is sleeved on the connecting rod (321). The rack (33) has a through groove communicating with its teeth, and the push plate (322) is slidably disposed in the through groove.
4. A hemostatic device for hematology nursing care according to claim 3, characterized in that: The outer wall of the housing (1) is provided with an installation groove (15), the release button (32) is provided in the installation groove (15), the release button (32) is provided with a slot (323) on one side, and the connecting rod (321) is fixed to the bottom of the slot (323); the inner wall of the ring notch (241) is provided with a sliding groove (242), and the two sides of the locking tooth (31) are provided with sliders, which are slidably connected to the ring notch (241) through the sliders.
5. A hemostatic device for hematology nursing care according to claim 1, characterized in that: The adjustment mechanism (4) includes a gear set (41), a lead screw (42), and a threaded block (43). The gear set (41) is driven by a rotating shaft (44). One end of the rotating shaft (44) is connected to a knob (23), and the other end is connected to the input gear of the gear set (41). The output gear of the gear set (41) is coaxially connected to the lead screw (42), and the threaded block (43) is threadedly engaged with the lead screw (42). The threaded block (43) is fixedly connected to a push rod (45), and the push rod (45) is fixedly connected to the connecting plate (221) of the retaining ring (22).
6. A hemostatic device for hematology nursing care according to claim 3, characterized in that: The housing (1) has two optical axes (14) mirrored inside. The limiting ring (24) has a connecting hole. The optical axes (14) pass through the connecting hole. The elastic element (141) is a helical spring and is respectively sleeved on the two optical axes (14).
7. A hemostatic device for hematology nursing care according to claim 5, characterized in that: The pressure block (21) is fixed to the bottom surface of the hollow cylinder by a connecting rod (214). The two ends of the connecting plate (221) are provided with connecting rods (222). The outer side wall of the pressure block (21) is mirrored with a connecting block (213). The rod part of the connecting rod (222) passes through the through hole of the connecting block (213). The end of the connecting rod (222) away from the connecting plate (221) is fixedly connected to the top surface of the retaining ring (22).
8. A hemostatic device for hematology nursing care according to claim 5, characterized in that: The knob (23) is rotatably mounted on the top of the hollow cylinder, and the knob (23) has anti-slip ridges.
9. A hemostatic device for hematology nursing care according to claim 1, characterized in that: The bottom of the pressure block (21) is provided with an opening and is detachably connected to a cover plate (212).
10. A hemostatic device for hematology nursing care according to claim 1, characterized in that: The housing (1) has hinges (11) on both sides, and the connecting wristband (12) is hinged to the hinges (11). The end of the connecting wristband (12) away from the hinges (11) is provided with Velcro (121).