Leech-imitating blood sucking device and using method thereof

Abstract

The invention relates to a leech-imitating blood sucking device and a using method thereof. The device comprises a sleeve, a collecting pipe, a spike piece and an adsorption piece. The sleeve is of a structure with one open end; a sealing piece is mounted at a pipe opening of the collecting pipe and used for sealing the collecting pipe, and the air pressure in the collecting pipe is lower than the standard atmospheric pressure; the end, close to the sealing piece, of the collecting pipe extends into the sleeve through the opening structure of the sleeve and is in sliding fit with the inner wall of the sleeve. The spiking piece is installed at the end, away from the inner wall of the collecting pipe, of the sleeve, corresponds to the sealing piece and is used for puncturing the sealing piece; the adsorption part is installed at the end, away from the outer wall of the collecting pipe, of the sleeve, corresponds to the spike part and communicates with the interior of the sleeve through the spike part. The disposable blood taking device is used in cooperation with a disposable blood taking needle, has the advantages of being simple in structure, low in price, very convenient to use, transport and carry, capable of reducing pollution of blood and body fluid to the environment and capable of being used by non-medical staff. And meanwhile, the ointment can also be used for wound surface blood suction, abscess blood and blood stasis removal and detumescence scenes.

Description

Technical Field

[0001] The present invention relates to the technical field of medical supplies, and particularly to a leech-like blood-sucking device and its usage method. Background Art

[0002] Blood collection is a medical operation for obtaining blood samples from the human body. Medical staff can collect blood samples from a patient's vein, artery, or capillary, and the collected blood samples can be used for subsequent clinical tests, diagnoses, and treatment monitoring. Since blood undertakes the functions of transporting oxygen, nutrients, and metabolic wastes in the human body, and can also reflect the body's health status, various health problems such as infectious diseases, metabolic disorders, blood system diseases, and tumors can be detected by analyzing changes in blood components.

[0003] When peripheral blood collection is required for a patient, such as when collecting blood from the finger pulp of the ring finger or the heel, etc., medical staff will first disinfect the blood collection site, and then quickly pierce the disinfected site with a blood collection needle to a depth of generally 2 mm - 3 mm, with the blood flowing out naturally being appropriate, and excessive squeezing should be avoided to prevent too much tissue fluid from mixing in and affecting the test results. Then, a micro blood suction tube is used to suck the blood, and immediate testing is carried out.

[0004] However, the above blood-sucking method is only suitable for on-site testing, and professional medical staff are required to suck the blood to prevent improper operation from causing blood coagulation or too much tissue fluid from mixing in and affecting the test results, and to avoid the situation of blood leakage and environmental pollution. This method also cannot preserve and transport the sample for other project tests.

[0005] Chinese Patent No. CN117982140A discloses a collection device for piercing a barrier to collect liquid. The collection device includes a housing having a receiving space and a puncture assembly. The housing includes a contact wall and a collection port penetrating the contact wall; the contact wall includes a contact surface, and a groove is formed on the contact surface. The groove includes a bottom wall and a surrounding wall; the bottom wall protrudes towards the barrier with a central part, and the collection port is arranged around the periphery of the central part; the collection device includes a vacuum chamber, and the vacuum chamber has a pressure lower than the atmospheric pressure. Although the disclosed device can be used to collect blood or other liquids, the internal structure of the disclosed device is too complex, the cost is high, the blood collection efficiency is low, the failure rate of micro needle puncture is relatively high, and the mixture of tissue fluid is also relatively large. It cannot be used for many detection items such as basic blood routine, and is not conducive to popularization and promotion.

[0006] Therefore, there is an urgent need for a high-quality whole blood collection device with a very simple structure, low price, simple operation, convenient transportation, suitable for various peripheral blood specimen detections, capable of preventing blood contamination, and usable by non-medical professionals. Summary of the Invention

[0007] The object of the present invention is to provide a leech - like blood - sucking device and its using method to solve the above - mentioned problems and those existing in the current peripheral blood - sampling technology.

[0008] To achieve the above object, the present invention provides the following solutions:

[0009] In a first aspect of the present invention, a leech - like blood - sucking device is provided, which includes a sleeve, a collection tube, a spike member and a suction member, wherein:

[0010] The sleeve has a structure with one end open;

[0011] A seal is installed at the pipe orifice of the collection tube. The seal is used to seal the collection tube, and the air pressure inside the collection tube is lower than the standard atmospheric pressure; one end of the collection tube close to the seal extends into the interior of the sleeve through the open structure of the sleeve and is in sliding fit with the inner wall of the sleeve;

[0012] The spike member is installed at one end of the inner wall of the sleeve away from the collection tube. The spike member is arranged corresponding to the seal and is used to pierce the seal;

[0013] The suction member is installed at one end of the outer wall of the sleeve away from the collection tube. The suction member is arranged corresponding to the spike member and is in communication with the interior of the sleeve through the spike member.

[0014] According to an embodiment of the present invention, the seal includes a second cover body detachably installed at the pipe orifice of the collection tube. A second cover - body through - hole is provided on the second cover body, and the second cover - body through - hole is used to communicate the interior of the second cover body with the exterior of the second cover body;

[0015] A pipe plug is installed in the second cover - body through - hole. The pipe plug is arranged corresponding to the spike member. Both the second cover body and the pipe plug are used to seal the collection tube, and the spike member is used to pierce the pipe plug.

[0016] According to an embodiment of the present invention, the pipe plug is a self - sealing rubber plug.

[0017] According to an embodiment of the present invention, the spike member includes a thorn needle installed at one end of the inner wall of the sleeve away from the collection tube. The tip of the thorn needle is arranged corresponding to the pipe plug and is used to pierce the pipe plug. A second communication hole is provided inside the thorn needle. The suction member is arranged corresponding to the second communication hole and is in communication with the interior of the sleeve through the second communication hole.

[0018] According to an embodiment of the present invention, the adsorbing member includes a first cover detachably mounted on one end of the outer wall of the sleeve away from the collecting tube. A first communication hole is formed in the first cover along the length direction of the sleeve. The first communication hole is correspondingly arranged with the second communication hole and is communicated with the inside of the sleeve through the second communication hole. The first cover is made of an elastic material.

[0019] According to an embodiment of the present invention, one end of the first communication hole away from the sleeve is a sucker structure, and the large circular end of the sucker structure is located at one end of the first communication hole away from the sleeve.

[0020] According to an embodiment of the present invention, a plurality of sliders are sequentially and fixedly mounted on the outer side wall of the second cover along the circumferential direction. The sliders are arranged parallel to the length direction of the sleeve. A plurality of slide rails are formed in the inner wall of the sleeve along its length direction. The plurality of slide rails are respectively correspondingly arranged with the plurality of sliders, and the plurality of slide rails are respectively in sliding fit with the plurality of sliders. The collecting tube is in sliding fit with the inner wall of the sleeve through the slide rails and the sliders.

[0021] According to an embodiment of the present invention, the inside of the collecting tube is in a vacuum state.

[0022] According to an embodiment of the present invention, the leech-like blood-sucking device further includes a protective housing. One end of the protective housing is an open structure. The opening of the protective housing is detachably connected to the sleeve, and the inner diameter of the protective housing is greater than or equal to the outer diameter of the collecting tube. A pressing hole is formed at one end of the protective housing away from the sleeve.

[0023] When the protective housing is mounted on the sleeve, the collecting tube is wholly or partially located inside the protective housing.

[0024] When the protective housing is mounted on the sleeve and one end of the collecting tube away from the sleeve contacts one end of the protective housing away from the sleeve, the spike member does not pierce the seal.

[0025] In a second aspect of the present invention, there is provided a method for using a leech-like blood-sucking device, including the steps of using the leech-like blood-sucking device as described above, which includes:

[0026] S1. Press the sucker structure tightly against the bleeding site of the patient.

[0027] S2. Slide the collecting tube inside the sleeve until the lancet pierces the tube plug to suck blood from the patient.

[0028] S3. After blood collection is completed, remove the protective housing and slide the collecting tube in the reverse direction until it is taken out from the inside of the sleeve, thereby completing the blood-sucking operation.

[0029] The present invention has at least the following technical effects:

[0030] The present invention provides a leech-like blood-sucking device and its usage method. By only setting a sleeve, a collection tube, a spike member and an attachment member, and cooperating with a disposable blood collection needle, the present invention can collect blood samples from patients. It has a simple structure, a low price, and is very convenient to use, transport and carry.

[0031] The present invention can collect blood samples from patients through the internal negative pressure of the collection tube, and the collection tube can be sealed to prevent blood or body fluid from overflowing and polluting the environment.

[0032] Due to the simple structure of the present invention, non-medical professionals can also use this device for blood-sucking work, which can promote the popularization of high-quality whole blood collection devices for non-medical professionals, and is of great significance.

[0033] The present invention can also be used for wound blood-sucking, removing pus and blood stasis, and reducing swelling, reducing the infectious pollution of body fluids to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0035] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 is Figure 1 a schematic diagram of the overall structure from another perspective of

[0037] Figure 3 is Figure 1 a front view of

[0038] Figure 4 is Figure 3 a cross-sectional view taken along the A-A direction in

[0039] Figure 5 is Figure 4 a schematic diagram of the overall structure after the acupuncture needle pierces through the tube plug in

[0040] Figure 6 is a schematic diagram of the overall structure of the sleeve and the acupuncture needle in the present invention;

[0041] Figure 7Schematic diagram of the overall structure of the collection tube and the second cover in the present invention;

[0042] Figure 8 Schematic diagram of the overall structure of the sleeve in the present invention;

[0043] Figure 9 Schematic diagram of the overall structure of the first cover in the present invention;

[0044] Figure 10 Schematic diagram of the overall structure of the protective housing in the present invention;

[0045] Figure 11 is Figure 10 Schematic diagram of the overall structure from another perspective of;

[0046] Figure 12 is Figure 5 Schematic diagram of the overall structure after installing the protective housing in;

[0047] Wherein, 1. Sleeve; 2. Collection tube; 3. First cover; 4. Suction cup structure; 5. First communication hole; 6. Needle; 7. Second communication hole; 8. Second cover; 9. Pipe plug; 10. Connection block; 11. Protective housing; 12. Pressing hole. Detailed implementation manners

[0048] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are used to exemplarily illustrate the principles of the present invention, and are not configured to limit the present invention. Additionally, the components in the drawings are not necessarily drawn to scale. For example, the dimensions of some components or regions in the drawings may be enlarged for other components or regions to assist in understanding the embodiments of the present invention.

[0049] The orientation terms appearing in the following description are all the directions shown in the drawings and do not limit the specific structure of the embodiments of the present invention. In the description of the present invention, it should be noted that unless otherwise specified, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0050] Furthermore, the terms "comprise", "include", "have" or any other variants thereof are intended to cover non-exclusive inclusion, such that a structure or component including a series of elements not only includes those elements, but also includes other elements that are not explicitly listed or are inherent to the structure or component. Without further limitation, an element defined by the statement "comprising..." does not exclude the presence of additional identical elements in the article or device including the element.

[0051] Spatial relationship terms such as "below", "beneath", "under", "lower", "above", "on", "higher", etc. are used to facilitate description and to explain the positioning of one element relative to a second element. These terms are intended to cover different orientations of the device, in addition to the orientations shown in the figures. Additionally, for example, "one element is on / under another element" can mean that the two elements are in direct contact, or it can mean that there are other elements between the two elements. Furthermore, terms such as "first", "second", etc. are also used to describe various elements, regions, parts, etc., and do not particularly refer to order or sequence, and should not be construed as limiting. Similar terms denote similar elements throughout the description.

[0052] For those skilled in the art, the present invention can be implemented without some of these specific details. The following description of the embodiments is merely provided to provide a better understanding of the present invention by showing examples of the present invention.

[0053] Referring to Figure 1-5 , the present invention provides a leech-like blood-sucking device, comprising a sleeve 1, a collection tube 2, a spike member, and a suction member, wherein:

[0054] The sleeve 1 has a structure with one end open.

[0055] In this embodiment, referring to Figure 1 , Figure 2 , Figure 6 or Figure 8 , the sleeve 1 can preferably be a cylindrical structure.

[0056] A seal is installed at the mouth of the collection tube 2. The seal is used to seal the interior of the collection tube 2, and the air pressure inside the collection tube 2 is lower than the standard atmospheric pressure. Preferably, the interior of the collection tube 2 can be in a vacuum state, that is, there can be no or almost no air pressure value inside the collection tube 2.

[0057] In this embodiment, referring to Figure 1 , Figure 2 or Figure 7 , the collection tube 2 can preferably be a cylindrical structure.

[0058] One end of the collection tube 2 close to the seal extends into the interior of the sleeve 1 through the opening structure of the sleeve 1 and is slidably engaged with the inner wall of the sleeve 1.

[0059] In this embodiment, with reference to Figure 4 or Figure 5 , the seal can extend into the interior of the sleeve 1 through the opening structure of the sleeve 1 and is slidably engaged with the inner wall of the sleeve 1, that is, the collection tube 2 can be slidably engaged with the inner wall of the sleeve 1 through the seal.

[0060] In a further optimized solution, medical staff can, according to actual detection needs, add various anticoagulants or additives known to those skilled in the art in advance inside the collection tube 2, so that medical staff can perform subsequent blood sample detection more accurately. For example, the anticoagulant can be heparin, EDTA, sodium citrate, etc. known in the art, and the additive can be a coagulant promoter, separation gel, silicifying agent, etc. known in the art, which are not particularly limited herein.

[0061] The spike member is installed at one end of the inner wall of the sleeve 1 away from the collection tube 2. The spike member is arranged corresponding to the seal, and the spike member can be used to pierce the seal.

[0062] In this embodiment, the connection manner between the spike member and the inner wall of the sleeve 1 is not particularly limited, and it can be any manner known in the art, such as using a colloidal substance to bond the two. Alternatively, the spike member and the sleeve 1 can be integrally formed.

[0063] The adsorbing member is installed at one end of the outer wall of the sleeve 1 away from the collection tube 2. The adsorbing member is arranged corresponding to the spike member and is communicated with the interior of the sleeve 1 through the spike member. Preferably, the adsorbing member can be made of an elastic material to better fit the human skin, which can effectively prevent blood from flowing out between the adsorbing member and the skin to the outside of the device, and thus effectively avoid problems such as polluting the external environment.

[0064] The blood-sucking device provided by the present invention can be mainly used for blood-sucking work on parts such as the finger pulp, heel, toe pulp, and earlobe of a patient. When in use, medical staff can press the adsorbing member tightly against the bleeding part of the patient, and then push the collection tube 2 inward (that is, push the collection tube 2 in the direction close to the spike member) to make the spike member pierce the seal. At this time, the patient's blood will be sucked into the collection tube 2 through the negative pressure inside the collection tube 2, thereby completing the collection of the blood sample.

[0065] In addition, the blood-sucking device provided by the present invention can also be used in non-medical settings to suck blood from wounds, remove pus, blood stasis, and reduce swelling, just like a leech. For example, when a patient has subcutaneous fluid accumulation or hematoma on their skin, they can first use an external sterile needle (a component known in the art) to prick the area of the subcutaneous fluid accumulation or hematoma, and then place the adsorbent close to the pricked area. Then, the collection tube 2 sleeve 1 is slid, and the collection tube 2 is pushed toward the direction close to the spike part so that the spike part pierces the seal. At this time, the patient's fluid or blood will be sucked into the collection tube 2 by the negative pressure inside the collection tube 2, thereby completing the absorption of the subcutaneous fluid or hematoma.

[0066] According to one embodiment of the present invention, the sealing member includes a second cover 8 detachably mounted at the pipe opening of the collecting pipe 2 .

[0067] In this embodiment, referring to Figure 4 、 Figure 5 and Figure 7 The structure of the second cover body 8 can be a cylindrical structure with a convex shape in vertical cross section. The diameter of the narrow section of the convex structure can be adapted to the inner wall diameter at the pipe mouth of the collecting tube 2, so that the narrow section of the convex structure of the second cover body 8 can be inserted into the pipe mouth of the collecting tube 2, and then the detachable connection between the collecting tube 2 and the second cover body 8 can be achieved through friction.

[0068] Furthermore, the narrow section of the convex-shaped second cover 8 can be provided with external threads along its circumference, and the nozzle of the collection tube 2 can be provided with internal threads that match the external threads on the second cover 8. In this way, the collection tube 2 and the second cover 8 can be detachably connected by a threaded connection. Compared with the connection based on friction force mentioned above, the threaded connection can be more secure, have better sealing, and be more convenient to assemble and disassemble.

[0069] The second cover body 8 is provided with a second cover body through hole, and the second cover body through hole is used to connect the interior of the second cover body 8 with the exterior of the second cover body 8 .

[0070] In this embodiment, referring to Figure 4 、 Figure 5 and Figure 7 The through hole of the second cover body can be a cylindrical structure, and can be opened at the central axis of the second cover body 8 of the cylindrical structure along the length direction of the collecting tube 2.

[0071] A pipe plug 9 is installed in the through hole of the second cover. The pipe plug 9 is arranged corresponding to the protruding member. The second cover 8 and the pipe plug 9 can both be used to seal the collection tube 2. That is, the second cover 8 and the pipe plug 9 are sealed together, and the two together provide a sealing effect for the collection tube 2. The protruding member can be used to pierce the pipe plug 9.

[0072] Preferably, the tube plug 9 can be a self-sealing rubber plug; the self-sealing rubber plug is an existing component known to those skilled in the art, which has a good sealing effect and can also self-recover to the sealed state through its own characteristics after being punctured, thereby ensuring the sealing of the blood sample collected in the collection tube 2 and reducing the possibility of the external environment contaminating the blood sample.

[0073] In this embodiment, referring to Figure 4 , the tube plug 9 can be installed inside the through hole of the second cover. Those skilled in the art can also, according to the actual situation, install the tube plug 9 at one end of the through hole of the second cover close to the collection tube 2 or install the tube plug 9 at one end of the through hole of the second cover far from the collection tube 2, as long as the sealing effect can be achieved, and no special limitation is made here.

[0074] According to an embodiment of the present invention, referring to Figure 4 , Figure 5 or Figure 6 , the spike member includes a lancet 6 installed at one end of the inner wall of the sleeve 1 far from the collection tube 2. The needle tip of the lancet 6 is correspondingly arranged with the tube plug 9 and can be used to puncture the tube plug 9. A second communication hole 7 is opened inside the lancet 6. The adsorbent is correspondingly arranged with the second communication hole 7 and is communicated with the inside of the sleeve 1 through the second communication hole 7.

[0075] In this embodiment, referring to Figure 4 , the direction of the lancet 6 can be parallel to the direction of the sleeve 1, and its needle tip can be arranged towards the direction close to the tube plug 9; at the same time, the lancet 6 can also be installed at the central axis of the sleeve 1 in the shape of a cylinder, and the second communication hole 7 can be opened along the length direction of the lancet 6, thereby realizing the collinearity (i.e., corresponding arrangement) of the second communication hole 7, the lancet 6 and the tube plug 9.

[0076] For a further optimized solution, referring to Figure 4 , a fixing block can be installed at the back end of the needle of the lancet 6. One end of the fixing block far from the lancet 6 is connected to the inner wall of the sleeve 1. The second communication hole 7 penetrates the fixing block and is communicated with the adsorbent. Among them, the connection methods of the lancet 6, the fixing block and the sleeve 1 can all be bonded by using glue substances known in the art, or the three can be integrally formed. More preferably, referring to Figure 6 , the fixing block can be a cylindrical structure, and its diameter is larger than the diameter of the back end of the needle of the lancet 6. Through the setting of the fixing block, the connection between the lancet 6 and the sleeve 1 can be made more firm.

[0077] In an embodiment of the present invention, the lancet 6, the fixing block and the sleeve 1 can all be of the same material. For example, the lancet 6, the fixing block and the sleeve 1 can all be made of metal materials (such as stainless steel), or they can all be made of ABS materials known in the art.

[0078] According to an embodiment of the present invention, referring to Figure 4 , the adsorbing member includes a first cover body 3 detachably mounted on one end of the outer wall of the sleeve 1 away from the collecting tube 2. A first communication hole 5 is formed in the first cover body 3 along the length direction of the sleeve 1. The first communication hole 5 is correspondingly arranged with the second communication hole 7 and is communicated with the inside of the sleeve 1 through the second communication hole 7. The first cover body 3 is made of an elastic material.

[0079] In this embodiment, the material of the first cover body 3 can preferably be a silicone or silicone-like substance known in the art, and more preferably a medical-grade silicone known in the art.

[0080] In this embodiment, referring to Figure 9 , the first cover body 3 can be in a cylindrical structure, and the first communication hole 5 can be formed at the central axis of the first cover body 3, so that the first communication hole 5, the second communication hole 7, the lancet 6 and the tube plug 9 can be collinear (i.e., correspondingly arranged).

[0081] In this embodiment, referring to Figure 8 , a connecting block 10 is fixedly mounted on one end of the outer wall of the sleeve 1 away from the collecting tube 2. The central axis of the connecting block 10 can be coaxially arranged with the central axis of the sleeve 1, and the second communication hole 7 penetrates through the connecting block 10.

[0082] Preferably, the connecting block 10 can be in a cylindrical structure with a convex-shaped cross section, and the small circular surface end thereof is fixedly connected to the outer wall of the sleeve 1. Referring to Figure 9 , a convex-shaped hole corresponding to the shape of the connecting block 10 can be formed inside the first cover body 3, and the convex-shaped hole is communicated with the first communication hole 5. When the first cover body 3 needs to be installed on the sleeve 1, since the first cover body 3 is made of an elastic material, the first cover body 3 can be sleeved on the convex-shaped connecting block 10 through the convex-shaped hole, thereby realizing the detachable connection between the two.

[0083] According to an embodiment of the present invention, referring to Figure 4 , one end of the first communication hole 5 away from the sleeve 1 is a suction cup structure 4. The shape of the suction cup structure 4 is preferably a frustum shape, and the large circular end of the suction cup structure 4 is located at one end of the first communication hole 5 away from the sleeve 1.

[0084] When a leech sucks blood from an animal, its mouth will be similar to a frustum-shaped suction cup and suck on the animal's skin, thereby realizing a tight combination with the animal's skin and then sucking blood from the animal (known in the art). By providing the suction cup structure 4, the contact surface between the first cover body 3 and the patient's skin can be made similar to the shape of the leech's mouth, utilizing the bionics principle. Thus, the suction cup structure 4 can make the first cover body 3 fit more tightly with the patient's skin, and then can more effectively collect the patient's blood sample.

[0085] In addition, when collecting a blood sample from a patient, the negative pressure in the collection tube 2 will suck a part of the patient's skin into the first communication hole 5, which will increase the discomfort of the patient. By providing the suction cup structure 4, the contact area between the first communication hole 5 and the patient's skin can be increased; when a part of the patient's skin is sucked into the suction cup structure 4, the sucked skin of the patient can fit on the annular inclined surface of the suction cup structure 4 and will not be sucked into the first communication hole 5, thereby reducing the pressure of the first communication hole 5 on the patient's skin, reducing the discomfort of the patient, and further reducing the pain of the patient.

[0086] According to an embodiment of the present invention, referring to Figure 7 , a plurality of sliders are fixedly installed in sequence along the circumferential direction on the outer side wall of the second cover 8, and the sliders are arranged parallel to the length direction of the sleeve 1.

[0087] In this embodiment, referring to Figure 7 , the shape of the slider can be a slightly flattened rectangular cube structure, and the number can be nine.

[0088] A plurality of slide rails (not shown in the figure) are provided on the inner wall of the sleeve 1 along its length direction, and the plurality of slide rails are respectively arranged in one-to-one correspondence with the plurality of sliders, and the plurality of slide rails are respectively in sliding fit with the plurality of sliders, and the collection tube 2 is in sliding fit with the inner wall of the sleeve 1 through the slide rails and the sliders.

[0089] The slide rails and the sliders can limit the collection tube 2, thereby effectively preventing the collection tube 2 from rotating inside the sleeve 1 and ensuring the stability of the collection tube 2 inside the sleeve 1. At the same time, the setting of the slide rails and the sliders can also ensure the stability of the collection tube 2 when sliding relatively inside the sleeve 1.

[0090] According to a preferred embodiment of the present invention, referring to Figures 10-12 , the leech-like blood-sucking device further includes a protective housing 11. One end of the protective housing 11 is an open structure, the opening of the protective housing 11 is detachably connected to the sleeve 1, and the inner diameter of the protective housing 11 is greater than or equal to the outer diameter of the collection tube 2; a pressing hole 12 is provided at the end of the protective housing 11 away from the sleeve 1.

[0091] In this embodiment, referring to Figure 10 or Figure 11 , the shape of the protective housing 11 can preferably be a cylindrical shape. Referring to Figure 12, the outer wall diameter of the protective housing 11 can preferably be the same as the outer wall diameter of the sleeve 1. When the protective housing 11 is installed on the sleeve 1, the setting that the outer wall diameter of the protective housing 11 is the same as the outer wall diameter of the sleeve 1 can make the integrity of the blood-sucking device in the present invention better. Among them, the detachable connection method between the protective housing 11 and the sleeve 1 can be any method known in the art; for example, external threads can be provided at the opening of the protective housing 11, and internal threads corresponding to the external threads at the opening of the protective housing 11 can be provided at the opening of the sleeve 1, so that the detachable connection between the protective housing 11 and the sleeve 1 can be realized through thread connection.

[0092] In this embodiment, referring to Figure 10 or Figure 11 , the shape of the pressing hole 12 can be a U-shaped structure. At the same time, a rectangular hole is opened on the side wall of the protective housing 11. The two opposite side lines of the rectangular hole are arranged parallel to the length direction of the protective housing 11, and these two side lines are respectively connected to the two side lines of the U-shaped pressing hole 12.

[0093] When it is necessary to push the collection tube 2 in the direction of the inside of the sleeve 1 to collect blood samples, medical staff can put their fingers into the U-shaped pressing hole 12, and the rectangular hole on the side wall of the protective housing 11 can provide space for the medical staff's fingers to push inward, that is, the medical staff can complete the pushing of the collection tube 2 with one finger, which greatly facilitates the pushing work of the collection tube 2 and provides convenience for the medical staff.

[0094] When the protective housing 11 is installed on the sleeve 1, the collection tube 2 will be wholly or partially located inside the protective housing 11. Thus, the protective housing 11 can be used to protect the collection tube 2, and the situation that the collection tube 2 is damaged due to collision can be effectively prevented.

[0095] When the protective housing 11 is installed on the sleeve 1 and the end of the collection tube 2 far from the sleeve 1 contacts the end of the protective housing 11 far from the sleeve 1, the spike member will not pierce the seal. Specifically, referring to Figure 12 , Figure 12 is the situation (cross-sectional view) where the protective housing 11 is installed on the sleeve 1 and the stylet 6 has pierced the tube plug 9. At this time, there is a certain distance between the end of the collection tube 2 far from the sleeve 1 and the inner wall of the end of the protective housing 11 far from the sleeve 1. If the end of the collection tube 2 far from the sleeve 1 is in a fitting state with the inner wall of the end of the protective housing 11 far from the sleeve 1, the tip of the stylet 6 will be located on the right side of the tube plug 9 at this time.

[0096] In addition, referring to Figure 10, chamfers are provided at the edges of the pressing hole 12 and the rectangular hole. When medical staff's fingers touch the edges of the pressing hole 12 or the rectangular hole, the chamfers can reduce the discomfort of the medical staff's fingers.

[0097] The present invention also provides a method for using the leech-like blood-sucking device, which includes the steps of using the leech-like blood-sucking device in the present invention, and it includes:

[0098] S1. Disinfect the finger of the patient at the blood collection site, for example, wipe the blood collection site with alcohol or iodophor known in the art to complete the disinfection process.

[0099] S2. Use an external blood collection pen to quickly puncture the blood collection site of the patient, for example, use a capillary puncture needle to puncture the finger pulp, heel, toe pulp, earlobe, etc. of the disinfected finger, and after puncturing, press the suction cup structure 4 tightly against the bleeding site (i.e., the blood collection site) of the patient. Among them, the external blood collection pen and the capillary puncture needle are both prior arts known to those skilled in the art and will not be elaborated here.

[0100] S3. The medical staff inserts the finger into the pressing hole 12 and pushes the collection tube 2 towards the inside of the sleeve 1. The pushed collection tube 2 will slide inside the sleeve 1 and then stop pushing until the puncture needle 6 pierces the tube plug 9; at this time, the negative pressure inside the collection tube 2 will be conducted to the suction cup structure 4 through the second communication hole 7 and the first communication hole 5, thereby realizing blood sucking from the bleeding site of the patient.

[0101] S4. After blood sucking is completed, remove the protective housing 11 and slide the collection tube 2 in the reverse direction until it is taken out from the inside of the sleeve 1. After taking it out, a cotton swab can be used to press and stop bleeding at the bleeding site of the patient, thereby completing the blood sample collection work.

[0102] The above embodiments of the present invention can be combined with each other and have corresponding technical effects.

[0103] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A leech-mimicking blood-sucking device, characterized in that, It comprises a sleeve (1), a collecting tube (2), a spike member and an adsorption member, wherein: The sleeve (1) is a structure with one end open; A sealing member is installed at the pipe opening of the collecting pipe (2), and the sealing member is used to seal the collecting pipe (2), and the air pressure inside the collecting pipe (2) is lower than the standard atmospheric pressure; one end of the collecting pipe (2) close to the sealing member extends into the interior of the sleeve (1) through the opening structure of the sleeve (1) and is slidably matched with the inner wall of the sleeve (1); The spike piece is mounted on one end of the inner wall of the sleeve (1) away from the collecting tube (2), the spike piece is arranged corresponding to the sealing piece, and the spike piece is used to pierce the sealing piece; The adsorption member is mounted on one end of the outer wall of the sleeve (1) away from the collecting tube (2); the adsorption member is arranged corresponding to the spike member and is in communication with the interior of the sleeve (1) via the spike member.

2. The leech-inspired blood-sucking device according to claim 1, characterized in that, The sealing member comprises a second cover (8) detachably mounted at the pipe mouth of the collecting pipe (2), the second cover (8) being provided with a second cover through hole, the second cover through hole being used to connect the interior of the second cover (8) with the exterior of the second cover (8); A pipe plug (9) is installed in the through hole of the second cover body, and the pipe plug (9) is arranged corresponding to the protruding piece. The second cover body (8) and the pipe plug (9) are both used to seal the collecting tube (2), and the protruding piece is used to pierce the pipe plug (9).

3. The leech-like blood-sucking device according to claim 2, wherein The pipe plug (9) is a self-sealing rubber plug.

4. The leech-like blood-sucking device according to claim 2, wherein, The protruding member comprises a needle (6) mounted on one end of the inner wall of the sleeve (1) away from the collecting tube (2), the needle tip of the needle (6) being arranged corresponding to the tube plug (9) and being used to pierce the tube plug (9), a second communicating hole (7) being provided inside the needle (6), the adsorption member being arranged corresponding to the second communicating hole (7) and being communicated with the interior of the sleeve (1) through the second communicating hole (7).

5. The leech-like blood-sucking device according to claim 4, wherein, The adsorption component comprises a first cover (3) which is detachably mounted on one end of the outer wall of the sleeve (1) away from the collecting tube (2); a first connecting hole (5) is provided in the first cover (3) along the length direction of the sleeve (1); the first connecting hole (5) is arranged corresponding to the second connecting hole (7) and is connected to the interior of the sleeve (1) through the second connecting hole (7); and the first cover (3) is made of elastic material.

6. The leech-mimicking blood-sucking device according to claim 5, characterized in that, The end of the first communicating hole (5) away from the sleeve (1) is a suction cup structure (4), and the large circular end of the suction cup structure (4) is located at the end of the first communicating hole (5) away from the sleeve (1).

7. The leech-like blood-sucking device according to claim 2, characterized in that, A plurality of sliders are fixedly installed in sequence along the circumferential direction on the outer side wall of the second cover body (8), and the sliders are arranged parallel to the length direction of the sleeve (1); a plurality of sliding rails are provided along the length direction on the inner wall of the sleeve (1), and the plurality of sliding rails are respectively arranged in one-to-one correspondence with the plurality of sliders, and the plurality of sliding rails are respectively in sliding fit with the plurality of sliders, and the collection tube (2) is in sliding fit with the inner wall of the sleeve (1) through the sliding rails and the sliders.

8. The leech-like blood-sucking device according to claim 1, characterized in that, The interior of the collection tube (2) is in a vacuum state.

9. The leech-inspired blood-sucking device according to claim 1, wherein, The leech-like blood-sucking device further includes a protective housing (11), one end of the protective housing (11) is an open structure, the opening of the protective housing (11) is detachably connected to the sleeve (1), and the inner diameter of the protective housing (11) is greater than or equal to the outer diameter of the collection tube (2); a pressing hole (12) is provided at the end of the protective housing (11) away from the sleeve (1). When the protective housing (11) is installed on the sleeve (1), the collection tube (2) is wholly or partially located inside the protective housing (11). When the protective housing (11) is installed on the sleeve (1) and the end of the collection tube (2) away from the sleeve (1) contacts the end of the protective housing (11) away from the sleeve (1), the spike member does not pierce the seal.

10. A method for using a blood-sucking device imitating a leech, characterized in that, Comprising the steps of using the leech-like blood-sucking device according to any one of claims 1-9, which includes: S1. Press the suction cup structure (4) tightly against the bleeding site of the patient. S2. Slide the collection tube (2) inside the sleeve (1) until the stylet (6) pierces the tube plug (9) to suck blood from the patient. S3. After blood collection is completed, remove the protective housing (11), and slide the collection tube (2) in the reverse direction until it is taken out from the inside of the sleeve (1), thereby completing the blood-sucking work.

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