Blood glucose monitoring fingertip blood sampling device
By designing the pen tip and pen barrel structure of the blood glucose monitoring finger-prick blood collection device, and using threaded connections and impact components, the problems of laborious installation and easy hand pricking in the existing technology have been solved, realizing convenient and safe blood collection needle operation.
Patent Information
- Application Number
- CN202422893225.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-11-26
AI Technical Summary
Existing lancing pens are laborious to install and remove lancets and are prone to causing hand injuries.
A blood glucose monitoring fingertip blood sampling device was designed, which adopts a pen tip and pen barrel structure. The blood sampling needle can be easily installed and removed through threaded connection and impact component, and the needle tip safety is ensured by spring and guide structure.
This allows for easy installation and removal of blood collection needles, avoiding the risk of hand injury and improving the safety and convenience of operation.
Smart Images
Figure CN223817558U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of blood glucose monitoring technology, specifically to a blood glucose monitoring fingertip blood sampling device. Background Technology
[0002] When measuring blood glucose with a blood glucose meter, a finger prick is required. Finger prick blood sampling is usually done using a lancing device. To do this, place the tip of the lancing device against the selected sampling site (such as the side of the fingertip), press the firing button on the lancing device, and the lancet will quickly eject and pierce the subcutaneous tissue. After puncture, gently squeeze the surrounding tissue at the sampling site to allow blood to flow out naturally and form a blood drop of an appropriate size. Then, place the blood drop on the sampling area of the test strip.
[0003] Blood collection needles are generally disposable. After each blood collection, the blood collection needle inside the pen tip needs to be removed, and a disposable blood collection needle needs to be put back in for the next blood collection.
[0004] When using existing lancets, it is necessary to hold the lancet near the tip to install and remove it. Installing and removing the lancet is quite laborious, and it is easy to get pricked by the needle tip when doing so. Utility Model Content
[0005] In view of the deficiencies in the existing technology, this utility model provides a blood glucose monitoring fingertip blood sampling device, which makes the installation and removal of the blood sampling needle more convenient and makes it less likely to prick the hand during the installation and removal of the blood sampling needle.
[0006] This utility model provides a finger-prick blood sampling device for blood glucose monitoring, comprising:
[0007] The pen tip includes a pen tip shell, a lancet housing, and a first spring. The pen tip shell has a spring cavity at its upper end and a first needle outlet at its lower end. The lancet housing is axially slidably disposed within the pen tip shell and is used to house the lancet. The upper end of the lancet housing has an opening extending to the upper end of the pen tip shell for insertion of the lancet. The lower end of the lancet housing has a second needle outlet aligned with the first needle outlet. The first and second needle outlets allow the lancet tip to pass through. The outer periphery of the upper end of the lancet housing has a first support ring adapted to the spring cavity. The first spring is sleeved around the lancet housing and supported between the lower end of the spring cavity and the first support ring.
[0008] The pen barrel includes a pen barrel shell and an impact component disposed within the pen barrel shell. The lower end of the pen barrel shell is detachably connected to the upper end of the pen tip shell. The impact component is used to impact the blood collection needle housing and the upper end of the blood collection needle housed within the blood collection needle housing during blood collection.
[0009] Furthermore, the upper end of the spring cavity has a through hole on its cavity wall, and the upper end of the blood collection needle accommodating cylinder has a raised edge that extends upward and passes through the through hole.
[0010] Furthermore, a first guide hole is provided on the cavity wall at the lower end of the spring cavity, and the blood collection needle receiving cylinder is adapted to the first guide hole and passes through the first guide hole.
[0011] Furthermore, the pen tip shell and the pen barrel shell are connected by threads.
[0012] Furthermore, the pen tip also includes a depth adjustment cap, which is connected to the outside of the lower end of the pen tip housing. The depth adjustment cap and the pen tip housing can be adjusted relative to each other in the axial direction. The lower end of the depth adjustment cap is provided with a third needle outlet hole that is aligned with the first needle outlet hole.
[0013] Furthermore, the depth adjustment cap is connected to the pen tip housing via a threaded connection.
[0014] Furthermore, the impact assembly includes an impact rod, a second spring, and a firing lock;
[0015] The pen barrel shell has a guide cavity at the upper end, a through hole at the upper end of the guide cavity, and a second guide hole at the lower end of the guide cavity. The impact rod is axially slidably disposed in the pen barrel shell. The upper end of the impact rod has a second support ring adapted to the guide cavity. The upper end of the impact rod has a pull rod extending out of the through hole. The lower end of the impact rod passes through the second guide hole.
[0016] The second spring is sleeved outside the pull rod and supported between the second support ring and the upper end of the guide cavity;
[0017] The firing locking component is mounted on the pen barrel housing and is used to lock or release the second support ring when the striking rod is in the firing position.
[0018] Furthermore, the firing locking element includes a button and a third spring;
[0019] The pen barrel shell has an external mounting groove, and the mounting groove has a through groove extending into the pen barrel shell. The middle part of the button is rotatably mounted in the mounting groove via a pivot. The inner side of the button has a locking pin that extends into the pen barrel shell through the through groove. The third spring is supported between the mounting groove and the button on the side away from the through groove. When the impact rod is in the ready-to-fire position, the locking pin is engaged with the lower side of the second support ring.
[0020] Furthermore, the outer edge of the upper end of the second support ring is provided with an annular extension that extends upward and fits into the guide cavity, and the lower end of the second spring is inserted into the annular extension.
[0021] Furthermore, the upper end of the pull rod is provided with an annular protrusion.
[0022] The beneficial effects of this utility model are reflected in:
[0023] To install the lancet, first remove the pen tip from the pen barrel. Then, holding the lancet by its tail, insert it through the opening at the top of the lancet housing. Next, attach the pen tip to the bottom of the pen barrel. When collecting blood, first load the impact assembly and place the bottom of the pen tip housing against the fingertip for lancet collection. Then, trigger the impact assembly, which strikes the lancet housing and the top of the lancet. This causes the lancet housing and lancet to move downwards, with the lancet tip piercing the pen tip housing and penetrating the fingertip for lancet collection. After the lancet housing reaches the bottom, it quickly rebounds under the action of the first spring, retracting the lancet tip back into the pen tip housing. To remove the lancet, first remove the pen tip from the pen barrel. Then, pull the lancet out of the lancet housing from the tail and discard it. Finally, reinstall the pen tip back into the pen barrel.
[0024] Compared to existing technologies, this application allows for the operation of both installing and removing the blood collection needle by holding the tail end of the needle, which not only makes installation and removal convenient but also reduces the risk of pricking the hand during the process. Attached Figure Description
[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0026] Figure 1 This is a perspective view of an embodiment of the present utility model;
[0027] Figure 2 This is a front view of an embodiment of the present utility model;
[0028] Figure 3 for Figure 2 AA section view;
[0029] Figure 4 This is a schematic diagram of the pen tip structure in an embodiment of this utility model;
[0030] Figure 5 This is a schematic diagram of the pen barrel structure in an embodiment of this utility model.
[0031] Figure label:
[0032] 100-Pen tip; 110-Pen tip shell; 111-Spring cavity; 112-First needle outlet; 113-Through hole; 114-First guide hole; 120-Blood lancet container; 121-Opening; 122-Second needle outlet; 123-First support ring; 124-Raised edge; 130-First spring; 140-Depth adjustment cap; 141-Third needle outlet; 200-Pen barrel; 210-Pen barrel shell ; 211-Guide cavity; 212-Perforation; 213-Second guide hole; 214-Mounting groove; 215-Through groove; 220-Impact rod; 221-Second support ring; 2211-Annular extension; 222-Pull rod; 2221-Annular protrusion; 230-Second spring; 240-Firing locking element; 241-Button; 2411-Snap pin; 242-Third spring; 300-Blood collection needle. Detailed Implementation
[0033] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.
[0034] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.
[0035] like Figures 1-5 As shown, this utility model embodiment provides a blood glucose monitoring fingertip blood sampling device, including a pen tip 100 and a pen barrel 200.
[0036] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The pen tip 100 includes a pen tip shell 110, a lancet container 120, and a first spring 130. The pen tip shell 110 has a spring cavity 111 at its upper end and a first needle outlet 112 at its lower end. The lancet container 120 is axially slidably disposed within the pen tip shell 110 and houses a lancet 300. The upper end of the lancet container 120 extends to the upper end of the pen tip shell 110 to accommodate the lancet 300. The lower end of the blood collection needle container 120 is provided with a second needle outlet 122 aligned with the first needle outlet 112. The first needle outlet 112 and the second needle outlet 122 are for the needle tip of the blood collection needle 300 to pass through. The outer periphery of the upper end of the blood collection needle container 120 is provided with a first support ring 123 adapted to the spring cavity 111. The first spring 130 is sleeved on the outside of the blood collection needle container 120 and supported between the lower end of the spring cavity 111 and the first support ring 123.
[0037] In some embodiments, refer to Figure 3 The upper end of the spring cavity 111 has a through hole 113 on the cavity wall. The upper end of the blood collection needle container 120 has a raised edge 124 that extends upward and passes through the through hole 113. In this way, when the blood collection needle 300 is inserted into the blood collection needle container 120, the tail of the blood collection needle 300 is exposed on the outer end of the pen tip shell 110, which makes it easy to pull out the blood collection needle 300.
[0038] In some embodiments, continue to refer to Figure 3 A first guide hole 114 is provided on the cavity wall at the lower end of the spring cavity 111. The blood collection needle container 120 is adapted to the first guide hole 114 and passes through the first guide hole 114. This can guide the blood collection needle container 120, so that the blood collection needle container 120 can move axially more smoothly.
[0039] In some embodiments, refer to Figures 1-4 The pen tip 100 also includes a depth adjustment cap 140, which is connected to the outside of the lower end of the pen tip housing 110. The depth adjustment cap 140 and the pen tip housing 110 can be adjusted relative to each other in the axial direction. The lower end of the depth adjustment cap 140 is provided with a third needle hole 141 that is aligned with the first needle hole 112.
[0040] This application controls the length of the needle tip of the lancet 300 extending beyond the lower end of the pen tip 100 by adjusting the distance between the depth adjustment cap 140 and the end of the pen tip shell 110, thereby adjusting the puncture depth of fingertip blood collection.
[0041] Optionally, the depth adjustment cap 140 is connected to the pen tip shell 110 by a thread, so that the puncture depth of finger-prick blood collection can be adjusted by rotating the depth adjustment cap 140, which is convenient and reliable.
[0042] Reference Figure 1 , Figure 2 , Figure 3 and Figure 5 The pen barrel 200 includes a pen barrel housing 210 and an impact component disposed within the pen barrel housing 210. The lower end of the pen barrel housing 210 is detachably connected to the upper end of the pen tip housing 110.
[0043] It is understandable that the pen tip housing 110 and the pen barrel housing 210 are connected by means of threads or snaps, with threaded connection being preferred.
[0044] The impact assembly is used to impact the upper end of the blood collection needle housing 120 and the blood collection needle 300 housed within the blood collection needle housing 120 during blood collection.
[0045] In some embodiments, refer to Figure 3 The impact assembly includes an impact rod 220, a second spring 230, and a firing lock 240.
[0046] The pen barrel shell 210 has a guide cavity 211 at the upper end, a through hole 212 at the upper end of the guide cavity 211, and a second guide hole 213 at the lower end of the guide cavity 211. The impact rod 220 is axially slidably disposed in the pen barrel shell 210. The upper end of the impact rod 220 is provided with a second support ring 221 adapted to the guide cavity 211. The upper end of the impact rod 220 is provided with a pull rod 222 extending out of the through hole 212. The lower end of the impact rod 220 passes through the second guide hole 213.
[0047] The second spring 230 is sleeved outside the pull rod 222 and supported between the upper end of the second support ring 221 and the guide cavity 211.
[0048] The firing locking element 240 is mounted on the pen barrel housing 210 and is used to lock or release the second support ring 221 when the striking rod 220 is in the ready-to-fire position.
[0049] Specifically, the firing locking element 240 includes a button 241 and a third spring 242.
[0050] The pen barrel shell 210 has an external mounting groove 214, and the mounting groove 214 has a through groove 215 extending into the pen barrel shell 210. The middle part of the button 241 is rotatably mounted in the mounting groove 214 via a pivot. The inner side of the button 241 has a locking pin 2411 that extends into the pen barrel shell 210 through the through groove 215. The third spring 242 is supported between the mounting groove 214 and the button 241 on the side away from the through groove 215. When the impact rod 220 is in the ready-to-fire position, the locking pin 2411 is locked on the lower side of the second support ring 221.
[0051] When the impact assembly is loaded, the impact rod 220 can be pulled upwards to the firing position via the lever 222. During this process, the second spring 230 stores force. When the impact rod 220 is pulled to the firing position, the locking pin 2411 on the inner side of the button 241 automatically locks onto the lower side of the second support ring 221 under the action of the third spring 242, thereby locking the impact rod 220. When firing, press the side of the button 241 close to the outside of the third spring 242 inwards, and press the side close to the locking pin 2411 outwards, thereby driving the locking pin 2411 to rotate outwards, causing the locking pin 2411 to separate from the lower side of the second support ring 221, thereby releasing the second support ring 221. The impact rod 220 accelerates downwards under the action of the second spring 230 and impacts the upper end of the blood collection needle container 120 and the blood collection needle 300.
[0052] Optionally, the outer edge of the upper end of the second support ring 221 is provided with an annular extension 2211 that extends upward and fits into the guide cavity 211. The lower end of the second spring 230 is inserted into the annular extension 2211, which can play a positioning role for the lower end of the third spring 242.
[0053] Optionally, to facilitate pulling the lever 222, the upper end of the lever 222 is provided with an annular protrusion 2221.
[0054] In this embodiment, when installing the blood collection needle 300, first remove the pen tip 100 from the pen barrel 200. Then, holding the tail end of the blood collection needle, insert the blood collection needle 300 into the opening 121 at the upper end of the blood collection needle housing 120. Next, attach the pen tip 100 to the lower end of the pen barrel 200. During blood collection, first load the impact component, then place the lower end of the pen tip housing 110 against the fingertip blood collection area. Then, trigger the impact component, which strikes the blood collection needle housing 120 and the upper end of the blood collection needle 300. The lancet 300 moves downward, and the tip of the lancet 300 passes through the pen tip housing 110 and punctures the fingertip for blood collection. After the lancet housing 120 touches the bottom, it quickly rebounds under the action of the first spring 130, thereby retracting the tip of the lancet 300 back into the pen tip housing 110. When disassembling the lancet 300, first remove the pen tip 100 from the pen barrel 200, then pull the lancet 300 out of the lancet housing 120 from the tail end, discard the lancet 300, and finally reinstall the pen tip 100 back into the pen barrel 200.
[0055] Compared with the prior art, this application allows for the operation of the blood collection needle 300 by holding the tail end of the needle during installation and disassembly, which not only makes installation and disassembly convenient but also reduces the risk of pricking the hand during the process.
[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. A blood glucose monitoring finger-prick blood sampling device, characterized in that, include: The pen tip includes a pen tip shell, a lancet housing, and a first spring. The pen tip shell has a spring cavity at its upper end and a first needle outlet at its lower end. The lancet housing is axially slidably disposed within the pen tip shell and is used to house the lancet. The upper end of the lancet housing has an opening extending to the upper end of the pen tip shell for insertion of the lancet. The lower end of the lancet housing has a second needle outlet aligned with the first needle outlet. The first and second needle outlets allow the lancet tip to pass through. The outer periphery of the upper end of the lancet housing has a first support ring adapted to the spring cavity. The first spring is sleeved around the lancet housing and supported between the lower end of the spring cavity and the first support ring. The pen barrel includes a pen barrel shell and an impact component disposed within the pen barrel shell. The lower end of the pen barrel shell is detachably connected to the upper end of the pen tip shell. The impact component is used to impact the blood collection needle housing and the upper end of the blood collection needle housed within the blood collection needle housing during blood collection.
2. The blood glucose monitoring finger-prick blood sampling device according to claim 1, characterized in that, The upper end of the spring cavity has a through hole in the cavity wall, and the upper end of the blood collection needle accommodating cylinder has a raised edge that extends upward and passes through the through hole.
3. The blood glucose monitoring finger-prick blood sampling device according to claim 1, characterized in that, The lower end of the spring cavity has a first guide hole on the cavity wall, and the blood collection needle accommodating cylinder is adapted to the first guide hole and passes through the first guide hole.
4. The blood glucose monitoring finger-prick blood sampling device according to claim 1, characterized in that, The pen tip shell and the pen barrel shell are connected by threads.
5. The blood glucose monitoring finger-prick blood sampling device according to claim 1, characterized in that, The pen tip also includes a depth adjustment cap, which is connected to the outside of the lower end of the pen tip housing. The depth adjustment cap and the pen tip housing can be adjusted relative to each other in the axial direction. The lower end of the depth adjustment cap is provided with a third needle outlet that is aligned with the first needle outlet.
6. The blood glucose monitoring finger-prick blood sampling device according to claim 5, characterized in that, The depth adjustment cap is connected to the pen tip shell by a thread.
7. The blood glucose monitoring finger-prick blood sampling device according to claim 1, characterized in that, The impact assembly includes an impact rod, a second spring, and a firing lock; The pen barrel shell has a guide cavity at the upper end, a through hole at the upper end of the guide cavity, and a second guide hole at the lower end of the guide cavity. The impact rod is axially slidably disposed in the pen barrel shell. The upper end of the impact rod has a second support ring adapted to the guide cavity. The upper end of the impact rod has a pull rod extending out of the through hole. The lower end of the impact rod passes through the second guide hole. The second spring is sleeved outside the pull rod and supported between the second support ring and the upper end of the guide cavity; The firing locking component is mounted on the pen barrel housing and is used to lock or release the second support ring when the striking rod is in the firing position.
8. The blood glucose monitoring finger-prick blood sampling device according to claim 7, characterized in that, The firing locking mechanism includes a button and a third spring; The pen barrel shell has an external mounting groove, and the mounting groove has a through groove extending into the pen barrel shell. The middle part of the button is rotatably mounted in the mounting groove via a pivot. The inner side of the button has a locking pin that extends into the pen barrel shell through the through groove. The third spring is supported between the mounting groove and the button on the side away from the through groove. When the impact rod is in the ready-to-fire position, the locking pin is engaged with the lower side of the second support ring.
9. The blood glucose monitoring finger-prick blood sampling device according to claim 7, characterized in that, The outer edge of the upper end of the second support ring is provided with an annular extension that extends upward and fits into the guide cavity, and the lower end of the second spring is inserted into the annular extension.
10. The blood glucose monitoring finger-prick blood sampling device according to claim 7, characterized in that, The upper end of the pull rod is provided with an annular protrusion.