Blood sampling device
By introducing a rubber stopper and sheath structure into the syringe, the problems of needlestick injuries and blood sample contamination for medical staff are solved, and safe blood collection and accurate testing are achieved.
Patent Information
- Application Number
- CN202422384353.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-09-29
AI Technical Summary
Existing syringes are prone to causing needlestick injuries to medical staff and the risk of blood sample contamination during the blood collection process, and blood samples are easily contaminated by external air, affecting the test results.
A blood sampling device is designed, which includes a piston cylinder, a needle, a connector, a rubber plug and a sheath structure. The rubber plug isolates the device from air contact and the sheath structure prevents needle stick injuries, ensuring that the blood sample does not leak.
It effectively prevents needle stick injuries and blood sample contamination, ensures that blood samples are not contaminated by external air, and improves the safety of blood collection operations and the accuracy of test results.
Smart Images
Figure CN223350214U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of medical technology, and more specifically, to a blood sampling device. Background Art
[0002] In clinical settings, blood sampling is often used to assess a patient's health. Currently, specialized negative pressure blood draws are commonly used. However, for patients requiring femoral artery blood for blood gas analysis or with insufficient vascular pressure, blood collection requires the use of a syringe.
[0003] However, in the current clinical practice of using existing syringes to collect blood samples from patients for testing, the syringe's piston and needle work together to collect the patient's blood sample. The needle is then removed from the piston and replaced with a cannula to isolate the open end of the piston to prevent it from contacting the external environment and causing contamination. The sample is then delivered to the testing site for testing. Although existing syringes can meet certain blood collection needs, they still have the following problems during use:
[0004] 1. When separating the needle after blood collection, there is a risk of needlestick injury to medical staff due to human factors;
[0005] 2. In the process of removing the needle and putting it back into the needle cannula, the blood sample is easily contaminated by contact with the outside air, which in turn affects the results of subsequent blood tests. In addition, although the open end of the piston cylinder can be isolated from the outside air by putting the needle cannula back into the piston cylinder, it is easy for the blood sample to overflow from the piston cylinder or even leak to the outside of the needle cannula during use, increasing the risk of medical staff coming into contact with the blood sample and being contaminated.
[0006] How to solve the above problems has become a technical problem that needs to be solved urgently. Utility Model Content
[0007] The technical problem to be solved by the utility model is to provide a blood sampling device which is not likely to cause the risk of needlestick injuries to medical personnel and blood sample contact contamination during the blood sampling process, and is not likely to cause blood samples to be contaminated by external air and affect subsequent blood test results.
[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0009] A blood sampling device comprises a syringe consisting of a piston cylinder for collecting blood samples and a needle for puncturing and collecting blood; a connector is sleeved on the opening of the piston cylinder, and a rubber plug is embedded in the connector for isolating the cavity of the piston cylinder from the external air during operation, wherein the needle is sleeved on the connector and one end of the needle passes through the rubber plug and is connected to the cavity of the piston cylinder; a sheath structure is also sleeved on the needle to prevent needle stick injuries and blood sample contamination.
[0010] Preferably, the needle includes a needle plug detachably mounted on the outer wall of the connector, and a needle body for puncturing and drawing blood is provided on the end of the needle plug away from the connector, and the end of the needle body located in the needle plug can penetrate the two ends of the rubber plug and extend into the cavity of the piston cylinder during operation, wherein the sheath structure is mounted on the needle plug.
[0011] Preferably, the sheath structure includes a sleeve that is detachably mounted on the outer wall of the needle plug and is used to wrap the needle body to prevent the needle body from causing needlestick injuries to medical staff. A rubber stopper is embedded in the sleeve at one end away from the needle plug, which is used for the needle body to be inserted during operation and then clamps the open end of the needle body to prevent blood sample leakage and contamination and excessive contact with external air that affects the test results.
[0012] Preferably, the rubber stopper and the rubber stopper body are both made of highly active elastomer silicone rubber material.
[0013] Preferably, the needle plug and the needle body are an integrally formed structure.
[0014] Preferably, the joint and the rubber plug are an integrally formed structure.
[0015] Due to the adoption of the above structure, the utility model has the following beneficial effects:
[0016] In the present invention, when it is necessary to perform a blood sampling operation on a patient, the piston cylinder of the syringe, the connector with a rubber plug inside, and the needle are connected together, and then the blood vessel of the designated part of the patient is punctured through the needle as required, and then the piston cylinder is operated to provide negative pressure power to transport the blood in the patient's body to the interior of the piston cylinder through the needle. After the blood sampling is completed, the sheath structure is fixed on the needle to wrap the needle, and then it is delivered to the testing site. The testing personnel then remove the sheath structure and operate the piston cylinder to transport the predetermined volume of blood sample to the external testing vessel for testing, and then remove the needle from the connector, and the piston cylinder and the needle can be classified and recycled. At this time, the open end of the piston cylinder is sealed by the rubber plug, which can effectively prevent the excess blood sample in the piston cylinder from overflowing and contacting with medical staff to cause contamination, thereby realizing the blood sampling and testing operations of the patient's blood sample. Through the mutual cooperation of the piston cylinder of the syringe and the needle with the rubber stopper, the connector and the sheath structure, it is possible to prevent the needle from being exposed and causing needlestick injuries to medical staff, and at the same time, it is possible to isolate the blood sample from contact with the outside air, thereby preventing the blood sample from being contaminated and affecting the subsequent blood test results. In addition, the sheath structure can also be used to clamp and seal the needle to prevent the blood sample in the piston cylinder from overflowing from the needle into the sheath structure and seeping out to the outside and contacting the medical staff to cause contamination, posing a safety hazard to the medical staff. Therefore, the utility model has the advantages of not easily causing the risk of needlestick injuries to medical staff and blood sample contact contamination during the blood sampling process, and not easily causing the blood sample to be contaminated by the external air and affecting the subsequent blood test results. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0018] Figure 1 This is a structural schematic diagram of a blood sampling device described in the present invention.
[0019] Explanation of the accompanying reference numerals: 10. piston cylinder, 20. needle, 21. needle plug, 22. needle body, 1. syringe, 2. connector, 3. rubber plug, 4. sheath structure, 41. sleeve, 42. rubber plug body. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0021] See also Figure 1 As shown, a blood sampling device includes a syringe 1 consisting of a piston cylinder 10 for collecting blood samples and a needle 20 for puncturing and collecting blood; a connector 2 is sleeved on the opening of the piston cylinder 10, and a rubber plug 3 is embedded in the connector 2 for isolating the cavity of the piston cylinder 10 from the external air during operation, wherein the needle 20 is sleeved on the connector 2 and one end of the needle 20 passes through the rubber plug 3 and is connected to the cavity of the piston cylinder 10; a sheath structure 4 is also sleeved on the needle 20 to prevent needle stick injuries and blood sample contamination. During use, when it is necessary to perform a blood sampling operation on a patient, the piston cylinder 10 of the syringe 1, the connector 2 with a rubber plug 3 inside, and the needle 20 are connected together, and then the blood vessel of the designated part of the patient is punctured through the needle 20 as required, and then the piston cylinder 10 is operated to provide negative pressure power to transport the blood in the patient's body to the interior of the piston cylinder 10 through the needle 20. After the blood sampling is completed, the sheath structure 4 is fixed on the needle 20 to wrap the needle 20, and then it is delivered to the testing site. The testing personnel then remove the sheath structure 4, and by operating the piston cylinder 10, a predetermined volume of blood sample can be transported to an external testing vessel through the needle 20 for testing, and then the needle 20 is removed from the connector 2, and the piston cylinder 10 and the needle 20 can be classified and recycled. At this time, the open end of the piston cylinder 10 is sealed by the rubber plug 3, which can effectively prevent the excess blood sample in the piston cylinder 10 from overflowing and contacting with medical staff to cause contamination, thereby realizing the blood sampling and testing operation of the patient's blood sample. Through the mutual cooperation between the piston cylinder 10 and the needle 20 of the syringe 1 and the stopper 3, the connector 2, and the sheath structure 4, the needle 20 can be prevented from being exposed and causing needlestick injuries to medical staff. At the same time, the blood sample can be isolated from the outside air, thereby preventing the blood sample from being contaminated and affecting the subsequent blood test results. In addition, the sheath structure 4 can also clamp and seal the needle 20 to prevent the blood sample in the piston cylinder 10 from overflowing from the needle 20 into the sheath structure 4 and seeping out to the outside and contacting medical staff to cause contamination, posing a safety hazard to medical staff, thereby effectively improving the convenience and safety of use.
[0022] In this embodiment, the needle 20 includes a pintle 21 detachably mounted on the outer wall of the connector 2. A needle body 22 for puncturing and drawing blood is inserted into the pintle 21 at one end remote from the connector 2. The end of the needle body 22 located within the pintle 21 is capable of extending through both ends of the rubber stopper 3 and into the cavity of the piston cylinder 10 during operation. The sheath structure 4 is mounted on the pintle 21. The sheath structure 4 includes a sleeve 41 detachably mounted on the outer wall of the pintle 21 for encasing the needle body 22 to prevent needlestick injuries to medical personnel. Embedded within the sleeve 41 at one end remote from the pintle 21 is a rubber stopper 42 for insertion of the needle body 22 during operation, thereby clamping and sealing the open end of the needle body 22 to prevent leakage and contamination of the blood sample and excessive contact with external air, which could affect the test results. During use, the blood vessels at designated locations of the patient are punctured through the needle body 22 of the needle 20 as required, and then the piston cylinder 10 is operated to provide negative pressure power to transport the blood in the patient's body to the interior of the piston cylinder 10 through the needle body 22. After the blood collection is completed, the sleeve 41 of the sheath structure 4 is fixedly sleeved on the needle plug 21 of the needle 20 to wrap the needle body 22. At this time, the puncturing and blood collection end of the needle body 22 is inserted into the rubber plug body 42 of the sheath structure 4 to seal the needle body 22, which can prevent the blood sample from being contaminated by the air and affecting the subsequent blood test results. At the same time, it can also prevent the blood sample in the piston cylinder 10 from overflowing from the needle body 22 to the sleeve 41 of the sheath structure 4 and seeping out to the outside to contact with medical staff to cause contamination, posing a safety hazard to medical staff.
[0023] In this embodiment, the rubber plug 3 and the rubber plug body 42 are both made of a highly active elastomeric silicone rubber material. The pintle 21 and the needle body 22 are integrally formed. The connector 2 and the rubber plug 3 are also integrally formed.
[0024] When this embodiment is used specifically, first, when it is necessary to perform a blood sampling operation on a patient, the piston cylinder 10 of the syringe 1, the connector 2 with a rubber plug 3 inside, and the needle plug 21 of the needle 20 are connected together; secondly, the blood vessel of the designated part of the patient is punctured through the needle body 22 of the needle 20 as required, and then the piston cylinder 10 is operated to provide negative pressure power to transport the blood in the patient's body through the needle body 22 to the interior of the piston cylinder 10; then, after the blood sampling is completed, the sheath structure 4 is fixedly sleeved on the needle plug 21 of the needle 20 to wrap the needle body 22. At this time, the puncturing and blood sampling end of the needle body 22 is inserted into the rubber plug body 42 of the sheath structure 4 to implement the sealing of the needle body 22, which can prevent the blood sample from being contaminated by air and affecting the subsequent blood test results, and can also prevent the piston cylinder 10 from leaking. The blood sample overflows from the needle body 22 into the sleeve 41 of the sheath structure 4 and seeps out to the outside and contacts with medical staff, causing contamination and posing a safety hazard to medical staff. Finally, the syringe 1 with the blood sample is delivered to the testing site, and the testing personnel remove the sheath structure 4 and operate the piston cylinder 10 to transport the predetermined volume of blood sample through the needle body 22 of the needle 20 to the external testing vessel for testing. The needle 20 is then removed from the connector 2, and the piston cylinder 10 and the needle 20 are classified and recycled. At this time, the rubber plug 3 seals the open end of the piston cylinder 10 under the connection limitation of the connector 2, which can effectively prevent the excess blood sample in the piston cylinder 10 from overflowing from its open end and contacting with medical staff to cause contamination, thereby realizing safe blood sampling and testing operations on the patient's blood sample. Through the mutual cooperation between the piston cylinder 10 and the needle 20 of the syringe 1 and the stopper 3, the connector 2, and the sheath structure 4, the needle 20 can be prevented from being exposed and causing needlestick injuries to medical staff. At the same time, the blood sample can be isolated from the outside air, thereby preventing the blood sample from being contaminated and affecting the subsequent blood test results. In addition, the sheath structure 4 can also clamp and seal the needle 20 to prevent the blood sample in the piston cylinder 10 from overflowing from the needle 20 into the sheath structure 4 and seeping out to the outside and contacting medical staff to cause contamination, posing a safety hazard to medical staff, thereby effectively improving the convenience and safety of use.
[0025] In summary, the utility model adopts the above-mentioned structure, which has the advantages of not easily causing the risk of needlestick injuries to medical personnel and blood sample contact contamination during the blood sampling process, and not easily causing the blood sample to be contaminated by external air and affecting the subsequent blood test results.
[0026] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-mentioned disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention that do not depart from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.
Claims
1. A blood sampling device, comprising a syringe (1) consisting of a piston cylinder (10) for collecting blood samples and a needle (20) for puncturing and collecting blood; characterized in that: A connector (2) is sleeved on the opening of the piston cylinder (10), and a rubber plug (3) is embedded in the connector (2) for isolating the cavity of the piston cylinder (10) from the external air during operation, wherein the needle (20) is sleeved on the connector (2) and one end of the needle (20) passes through the rubber plug (3) and is connected to the cavity of the piston cylinder (10); a sheath structure (4) is also sleeved on the needle (20) for preventing needle stick injuries and blood sample contamination.
2. The blood sampling device according to claim 1, characterized in that: The needle (20) comprises a needle plug (21) which is detachably sleeved on the outer wall of the connector (2); a needle body (22) for puncturing and drawing blood is provided on the end of the needle plug (21) away from the connector (2); and the end of the needle body (22) located inside the needle plug (21) can penetrate through both ends of the rubber plug (3) and extend into the cavity of the piston cylinder (10) during operation, wherein the sheath structure (4) is sleeved on the needle plug (21).
3. The blood sampling device according to claim 2, characterized in that: The sheath structure (4) comprises a sleeve (41) which is detachably sleeved on the outer wall of the needle plug (21) and is used to wrap the needle body (22) to prevent the needle body (22) from causing needle stick injuries to medical personnel. A rubber plug (42) is embedded in the sleeve (41) at one end away from the needle plug (21) and is used for the needle body (22) to be inserted during operation and then clamped to close the open end of the needle body (22) to prevent blood sample leakage and contamination and contact with external air that affects the test results.
4. The blood sampling device according to claim 3, characterized in that: The rubber plug (3) and the rubber plug body (42) are both made of highly active elastomer silicone rubber material.
5. The blood sampling device according to claim 3, characterized in that: The needle plug (21) and the needle body (22) are an integrally formed structure.
6. The blood sampling device according to any one of claims 1 to 5, characterized in that: The joint (2) and the rubber plug (3) are an integrally formed structure.