Piercing head for medical devices and product assembly comprising the same

Abstract

The utility model relates to medical instrument technical field provides a kind of puncture head and the product assembly containing the puncture head for medical equipment, wherein the puncture head for medical equipment includes: puncture part, can be broken open membrane of closed container with membrane along puncture direction, puncture part has broken tip, and gradually deviates expansion part in the reverse direction of broken tip, reverse direction is the opposite direction of puncture direction;Extrusion part, with the extrusion part of the center line protruding away from extrusion part, extrusion part includes first camber, transition surface and second camber sequentially arranged along the reverse direction, first camber has the maximum distance L1 relative to center line, second camber has the maximum distance L2 relative to center line, transition surface has the maximum distance L3 relative to center line, wherein, L2≥L1>L3.The puncture head provided by the utility model can eliminate the possibility of tearing and lifting of the broken membrane in the prior art, and avoid affecting the subsequent steps.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a puncture head for medical devices and a product component containing the puncture head. Background Technology

[0002] Medical devices often utilize membrane-sealed reaction tubes containing reagents or corresponding media. When needed, the membrane is punctured to inject the sample or remove the reagent. For example, existing molecular diagnostic devices utilize membrane-sealed reaction tubes. When testing a sample, the sample is mixed with reagents, and then the nucleic acid in the reaction tube is amplified and fluorescence detected. Specifically, the puncture assembly first punctures the aluminum membrane at the tube opening, then a transfer assembly picks up the tube and transfers it to the destination, awaiting sample loading. After sample loading, a transfer assembly uses the tube cap to seal the tube, preventing aerosol generation from the internal reaction solution and potential contamination of the equipment.

[0003] However, in the current equipment, after the puncture component punctures the aluminum film on the reaction tube, the punctured aluminum film may tear and lift up. This could easily cause the sample dispensing needle to touch the aluminum film during the subsequent sample dispensing step, resulting in sample residue on the aluminum film and forming aerosol contamination. Moreover, during the subsequent capping step, the reaction tube cap may touch the punctured aluminum film, and as the reaction tube cap descends, the aluminum film may be further torn, producing debris that falls into the reaction tube and affects the test or reaction results. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a puncture head for medical devices and a product component containing the puncture head, so as to eliminate the possibility of tearing and lifting of the punctured membrane in the prior art and avoid affecting subsequent steps.

[0005] In a first aspect, the present invention provides a puncture head for a medical device, comprising: a puncture portion capable of puncturing the membrane of a closed container with an opening along a puncture direction, the puncture portion having a puncture tip and an expansion portion gradually deviating in the opposite direction to the puncture tip, the opposite direction being the opposite direction to the puncture direction; and a compression portion located in the opposite direction of the expansion portion and having its edge engaging with the expansion portion, having a compression portion protruding toward a centerline away from the compression portion, the compression portion comprising a first arc surface, a transition surface, and a second arc surface arranged sequentially along the opposite direction, the first arc surface having a maximum distance L1 relative to the centerline, the second arc surface having a maximum distance L2 relative to the centerline, and the transition surface having a maximum distance L3 relative to the centerline, wherein L2≥L1>L3.

[0006] According to the first aspect of the present invention, after the puncture part punctures the membrane of the sealed container, the expansion part continues to apply pressure and cut the membrane in the first stage as the puncture part penetrates deeper, so that the membrane is divided into multiple relatively uniform parts. In the second stage after the expansion part passes the opening of the container where the membrane is located, the divided parts of the membrane are gradually pushed to the side wall of the sealed container by the squeezing part. During the pushing process, the first arc surface causes the tear in the membrane to continue to expand and makes the membrane abut against the side wall of the sealed container. At the same time, after the first arc surface passes, it bypasses the relatively narrow transition surface, allowing the divided parts of the membrane to form partial elastic retraction. Then, the second arc surface, which is relatively equal in distance or wider, performs a second squeezing on this part, which can effectively overcome the elastic lifting after the initial squeezing and finally squeeze it to adhere to the side wall of the sealed container, so as to avoid the influence of the membrane on the sample and reaction solution during subsequent liquid injection and sealing.

[0007] In a preferred embodiment of this utility model, the puncture head further includes a clamping portion between the extrusion portion and the puncture portion. The clamping portion has a concave surface that moves toward the centerline away from the extrusion portion. The concave surface is used to cooperate with the assembly portion of the closed container to pick up the closed container. The distance between all surfaces of the clamping portion including the concave surface and the centerline is less than the maximum distance between the first arc surface and the centerline.

[0008] In a preferred embodiment of this utility model, the concave surface includes a first clamping surface recessed away from the center line, and the clamping portion further includes a limiting surface disposed in contact with the first clamping surface and located in the puncture direction of the first clamping surface. The first clamping surface has a minimum distance L4 relative to the center line, and the limiting surface has a maximum distance L5 relative to the center line. The distance between all surfaces of the limiting surface and the center line is greater than L4, and L1>L5>L4.

[0009] In a preferred embodiment of this invention, the transition surface is a second clamping surface that is recessed away from the center line.

[0010] In a preferred embodiment of the present invention, the expansion portion includes at least two blades connected to the piercing tip, the at least two blades being arranged around the periphery of the piercing tip.

[0011] In a preferred embodiment of the present invention, the puncture portion further includes a venting groove located between the two blade portions, the venting groove extending from the puncture portion to the compression portion.

[0012] In a preferred embodiment of this utility model, the first arc surface and the second arc surface are spherical surfaces with the same diameter, and the first connecting line connecting the first arc surface and the transition surface has a corresponding maximum distance L1 relative to the center line, and the second connecting line connecting the second arc surface and the transition surface has a corresponding maximum distance L2 relative to the center line.

[0013] In a preferred embodiment of this invention, the maximum distance L1 of the first arc surface relative to the center line is equal to the maximum distance L2 of the second arc surface relative to the center line.

[0014] In a preferred embodiment of this invention, the puncture head further includes an external connection portion located in the opposite direction to the compression portion and capable of engaging with an external component.

[0015] In a second aspect, the present invention also provides a product assembly containing a puncture head, comprising a puncture head, a closed container, and a cap component as described in the first aspect embodiment. The closed container comprises: a container body having a receiving chamber and a container opening communicating with the receiving chamber; a sealing film covering the container opening; the cap component comprises: a sealing portion capable of being assembled onto the container body and sealing the receiving chamber; a connecting portion having a first mounting portion; wherein the container body further comprises a second mounting portion disposed between the receiving chamber and the container opening, and the puncture head further comprises a positioning portion capable of cooperating with the first mounting portion and the second mounting portion, and picking up the closed container or the cap component via the positioning portion.

[0016] According to the product assembly with a puncture head provided in the second aspect of this utility model, the puncture head of the first aspect embodiment is used, which can effectively recover the punctured membrane on the side wall of the container to avoid the membrane affecting subsequent steps. At the same time, in this product assembly, the puncture head has a corresponding assembly part for placing the closed container, so that the closed container can be picked up by simply continuing to move along the puncture direction during the puncture process. After moving to the destination, the corresponding assembly part is used to pick up the cover component and seal the cover component on the closed container. This allows the puncture head in this product assembly to be used with the corresponding closed container and cover component, eliminating the need for additional grippers or other picking robots to pick up and seal the closed container and cover component, significantly improving the equipment processing efficiency.

[0017] Other features and advantages of the present invention will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the technical solution of the present invention. The objects and other advantages of the present invention may be realized and obtained by means of the structures and / or processes particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of a puncture head for a medical device provided in an embodiment of this utility model;

[0019] Figure 2 for Figure 1 A partial structural diagram of the puncture head provided in the diagram;

[0020] Figure 3 This is a structural diagram of the first state when the piercing head punctures a closed container, as provided in an embodiment of the present invention.

[0021] Figure 4 for Figure 3 Internal structure diagram at point A;

[0022] Figure 5 This is a structural diagram of the second state when the piercing head pierces a closed container, as provided in an embodiment of the present invention.

[0023] Figure 6 for Figure 5 Internal structure diagram at point B;

[0024] Figure 7 This is a structural diagram of the piercing head picking up the cap component according to an embodiment of the present invention;

[0025] Figure 8 for Figure 7 A magnified view of a portion of point C in the middle;

[0026] Figure 9 A schematic diagram of the structure of the closed container provided in an embodiment of this utility model;

[0027] Figure 10 A cross-sectional view of a closed container provided in an embodiment of this utility model;

[0028] Figure 11 A schematic diagram of the structure of the cover component provided in an embodiment of this utility model;

[0029] Figure 12 This is a schematic diagram of the structure of the cover component provided in this embodiment of the present invention when it is assembled on a closed container.

[0030] Explanation of icon numbers: 100 puncture section, 110 puncture tip, 120 expansion section, 121 blade section, 130 venting groove; 200 Extrusion section, 210 First arc surface, 211 First extrusion point, 220 Transition surface, 230 Second arc surface, 231 Second extrusion point; 300 Clamping portion, 310 Concave surface, 311 First clamping surface, 312 Limiting surface; 400 external connection part, 410 shaft fixing part; 500 Closed container, 510 Container body, 511 Receiving chamber, 520 Opening, 521 Membrane receiving wall, 522 First conical sidewall, 523 Assembly protrusion, 524 Sealing joint, 530 Container opening; 600 Cover component, 610 Sealing part, 611 Sealing protrusion, 620 Connecting part, 621 First assembly part, 622 Connecting chamber, 630 Stepped surface; 700 membrane. Detailed Implementation

[0031] The following detailed description of the embodiments of this utility model, in conjunction with the accompanying drawings, will provide a thorough understanding of how this utility model uses technical means to solve technical problems and achieve technical effects, enabling its implementation. It should be noted that these specific descriptions are merely intended to facilitate a clearer understanding of this utility model by those skilled in the art, and are not intended to limit its scope. For example, the use of "first" and "second" in the embodiments of this utility model is not intended to limit its application, but merely to indicate the serial numbers of multiple identical or similar devices or mechanisms. Those skilled in the art can readjust these serial numbers for ease of description or during the organization of technical solutions. Furthermore, alternative solutions are described for some mechanisms in different embodiments, and these alternatives can be applied to other identical or similar devices or mechanisms. As long as there is no conflict, the various embodiments and features in each embodiment of this utility model can be combined with each other, and the resulting technical solutions are all within the protection scope of this utility model.

[0032] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figures 1 to 7 As shown, this utility model provides a puncture head for medical devices, used in the field of medical devices to puncture the membrane 700 of a closed container 500. The closed container 500 can be a container containing reaction reagents or other reaction substances. After the membrane 700 is punctured, samples can be injected into the closed container 500 to form a detection solution, or substances inside the closed container 500 can be removed. The puncture head includes a puncture section 100 and a squeezing section 200. The puncture section 100 has a puncture tip 110 and an expansion section 120. The puncture tip 110 acts on a point on the membrane 700 to puncture the membrane 700 in the puncture direction. The expansion section 120 is located in the opposite direction to the puncture tip 110 and gradually deviates from the axis of the puncture tip. This axis is parallel to the puncture direction, and the opposite direction is the opposite of the puncture direction.

[0034] Therefore, after the puncture tip 110 punctures the membrane 700 in the container opening 530 of the closed container 500, a puncture hole will be formed in the membrane 700. As the puncture head penetrates deeper along the puncture direction, the expansion part 120 gradually expands the puncture hole. During the expansion process, the membrane 700 will be continuously torn and gradually move towards the side wall inside the container opening 530, dividing it into multiple parts. In particular, when the membrane 700 is a membrane with poor deformability, such as an aluminum film, the membrane 700 will be torn during the expansion of the puncture hole after compression. After the tear is formed, the expansion part 120 will continuously expand the tear to tear the membrane 700 into multiple parts.

[0035] See Figure 1 and Figure 2 The squeezing part 200 is in the opposite direction to the expansion part 120, and its edge engages with the expansion part 120. After the expansion part 120 has expanded the puncture opening of the membrane 700, the squeezing part 200 squeezes the multiple torn portions of the membrane 700. Specifically, the squeezing part 200 has a squeezing portion protruding away from the centerline of the squeezing part 200, which is used to contact the membrane 700 and move the membrane 700 away from the centerline. In this embodiment, the centerline is the same as the aforementioned axial direction, which enables the membrane 700 to tear and expand evenly. The squeezing part includes a first arc surface 210, a transition surface 220 and a second arc surface 230 arranged sequentially in the opposite direction. The first arc surface 210 and the second arc surface 230 are respectively located on both sides of the transition surface 220 in the centerline direction. When the squeezing part 200 reaches the container opening 530 and continues to penetrate in the puncture direction, the membrane 700 inside the container opening 530 passes through the first arc surface 210, the transition surface 220 and the second arc surface 230 in sequence.

[0036] The first arc surface 210 has a maximum distance L1 relative to the center line, the second arc surface 230 has a maximum distance L2 relative to the center line, and the transition surface 220 has a maximum distance L3 relative to the center line. The relationship between these three distances is L2 ≥ L1 > L3. Therefore, during the movement of the puncture head in the puncture direction, the portion of the first arc surface 210 with the maximum distance L1, such as the first compression point 211 where it intersects with the transition surface 220, and the portion of the second arc surface 230 with the maximum distance L2, such as the second compression point 231 where it intersects with the transition surface 220, are kept at the center line as the puncture head moves. With the same maximum distance L1, and since the maximum distance L3 on the transition surface 220 is less than L1 and L2, the distance between any point on the transition surface 220 and the center line is less than L1 and L2. This causes the transition surface 220 to be concave relative to the first extrusion point 211 and the second extrusion point 231. After the membrane 700 is extruded to the first arc surface 210, it can perform a certain degree of elastic recovery on the transition surface 220. After passing through the transition surface 220, the second extrusion point 231 on the second arc surface 230 extrudes the membrane 700 a second time, and applies deformation force to the membrane 700, which has undergone the elastic recovery process, so that the membrane 700 overcomes the elastic recovery inertia and adheres more effectively to the inner sidewall of the closed container 500.

[0037] It should be noted that when a metal film made of materials such as aluminum is punctured and squeezed to expand, it will have a large deformation recovery ability in the initial case. If only a one-time continuous extrusion is used, strong recovery will occur after the extruder leaves the extrusion part of the film 700. However, the secondary extrusion of the film 700 by the second arc surface 230 can release at least part of the elastic recovery potential energy of the film 700. The re-deformation of the film 700 makes the film 700 better maintain its position after extrusion. Therefore, after the puncture head leaves the closed container 500, the film 700 will not recover or will only have a small amount of elastic reset, moving away from the axis of the closed container 500 and will not appear in the center inner position of the container opening 530, thus affecting the subsequent liquid injection and reaction process.

[0038] In one embodiment of this utility model, see [reference needed]. Figure 2 The puncture head also includes a clamping portion 300 between the extrusion portion 200 and the puncture portion 100. The clamping portion 300 is used to clamp the closed container 500. The clamping portion 300 has a concave surface 310 that approaches the centerline away from the extrusion portion 200. The closed container 500 has a mounting portion that mates with the concave surface 310. The mounting portion includes a mounting protrusion 523 that mates with the concave surface 310, so that the clamping portion 300 can clamp the closed container 500 to pick up and transfer the closed container 500.

[0039] The distance between all surfaces of the clamping portion 300, including the concave surface 310, and the center line is less than the maximum distance between the first arc surface 210 and the center line, i.e., less than L1. At the same time, the concave surface 310 is located in the piercing direction of the clamping portion 300. Therefore, when the concave surface 310 reaches the assembly protrusion 523, it will not squeeze the membrane 700 or the degree of squeezing will not affect the subsequent squeezing process of the extrusion portion 200 on the membrane 700. During the process of the puncture head puncturing and picking up the closed container 500, the puncture head punctures the membrane 700 at the corresponding puncture position. After puncture, the farthest end of the torn portion of the membrane 700 cannot reach the assembly part within the closed container 500. In this case, the picking position of the puncture head on the closed container 500 will not touch the membrane 700, and is separated from the working area of ​​the extrusion part 200. This can avoid the picking structure affecting the extrusion effect on the membrane 700, or the membrane 700 having an adverse effect on the picking structure, such as the membrane 700 being clamped between the picking structures, increasing slippage, and resulting in loose picking.

[0040] Specifically, the concave surface 310 includes a first clamping surface 311 recessed away from the centerline. The first clamping surface 311 is used to engage with the mounting protrusion 523. The clamping portion 300 also includes a limiting surface 312 disposed in contact with the first clamping surface 311 and located in the piercing direction of the first clamping surface 311. The limiting surface 312 can restrict the piercing head from moving in the disengagement direction opposite to the piercing direction, thereby disengaging the first clamping surface 311 from the mounting protrusion 523 and preventing it from leaving the pickup position. For example, in Figure 5 and Figure 6 In the process, when the concave surface 310 engages with the mounting protrusion 523 and the piercing head lifts the sealed container 500 in a vertically upward direction, the sealed container 500 tends to move downward relative to the piercing head under the influence of gravity. At this time, the limiting surface 312 abuts against the mounting protrusion 523, preventing the sealed container 500 from moving in the disengagement direction. In a specific implementation, the first clamping surface 311 has a minimum distance of L4 relative to the center line, and the limiting surface 312 has a maximum distance of L5 relative to the center line. The distance between all surfaces of the limiting surface 312 and the center line is greater than L4. Thus, the mounting protrusion 523 can clamp on the first clamping surface 311 with the smallest distance relative to the center line, and L1>L5>L4. The squeezing distance of the clamping part 300 on the membrane 700 is less than the squeezing distance of the squeezing part 200 on the membrane 700, so as not to affect the squeezing process of the squeezing part 200 on the membrane 700.

[0041] Further details can be found in the following sections. Figure 9 and Figure 10The sealed container 500 includes a container body 510 and an opening 520 communicating with the interior of the container body 510. The container body 510 has a receiving chamber 511 capable of storing fluid or other media. The opening 520 has a membrane receiving wall 521, a first conical sidewall 522, and an assembly protrusion 523 arranged sequentially in the direction of the depth of the container opening 530. The membrane receiving part 521 has a cylindrical or approximately cylindrical structure. In specific implementations, the approximately cylindrical shape can be set as a conical surface with a relatively small taper, such as less than 2°, to receive the torn portion of the membrane 700. The first conical sidewall 522 serves as an extension of the membrane receiving wall 521 and is suitable for situations where the puncture point is not at the center of the membrane 700. It can receive the pointed portion of the membrane 700 formed after tearing and prevent the membrane 700 from moving further toward the container body 510. The assembly part is located on the inner side of the first conical sidewall 522 so that the membrane 700 does not affect the picking operation. In conjunction with the aforementioned puncture head implementation structure, the clamping part 300 is close to the puncture part 100. When the clamping part 300 engages with the assembly protrusion 523, the squeezing part 200 squeezes and collects the torn membrane 700 on the membrane receiving wall 521 and the first conical sidewall 522, preventing the membrane 700 from affecting the pickup structure.

[0042] In another embodiment, the transition surface 220 is a second clamping surface recessed away from the centerline, see reference. Figure 7 , Figure 8 , Figure 11 and Figure 12 The cover member 600 has a connecting part 620 corresponding to the second clamping surface. When the piercing head is not used to connect the reaction tube but is assembled with the cover member 600, the cover member 600 is picked up by the cooperation between the connecting part 620 and the second clamping surface.

[0043] In addition, please continue to refer to Figure 1 and Figure 2 The expansion portion 120 includes at least two blade portions 121 connected to the piercing tip 110. The at least two blade portions 121 have cutting edges extending from the piercing tip 110 and are arranged around the periphery of the piercing tip 110. After the piercing tip 110 pierces the membrane 700, the at least two blade portions 121 cut along the piercing point of the membrane 700, thereby dividing the membrane 700 into multiple parts, for example, in... Figure 2 In the illustrated embodiment, the expansion portion 120 has four blades 121 evenly arranged around the center line. When punctured, the membrane 700 can be evenly divided into four parts. These four parts are further compressed and contracted by the compression portion 200 onto the membrane accommodating wall 521 and the first conical sidewall 522 of the closed container 500. The use of multiple blades 121 eliminates the randomness of tearing and segmentation after the membrane 700 is punctured, ensuring even segmentation so that the compression portion 200 can compress and fix it.

[0044] In this embodiment, the puncture section 100 further includes a venting groove 130 located between the two blades 121. The venting groove 130 extends from the puncture section 100 to the compression section 200, and is used to release gas from the sealed container 500 during the puncture process, thereby reducing the difficulty of puncture. Figures 3 to 6 Taking the embodiment shown as an example, when the puncture head moves along the puncture direction, because the squeezing part 200 is very close to the inner wall of the closed container 500 when squeezing the membrane 700, it will form a structure similar to a closed chamber with the inside of the closed container 500. As it goes deeper, it gradually compresses the internal space of the closed chamber, resulting in higher and higher internal air pressure and greater resistance. The venting groove 130 can allow the gas inside the closed container 500 to be discharged to the outside of the closed container 500, thereby ensuring the air pressure balance inside and outside the closed container 500 and facilitating the puncture process.

[0045] In one specific embodiment, the maximum distance L1 of the first arc surface 210 relative to the center line is equal to the maximum distance L2 of the second arc surface 230 relative to the center line. The consistent extrusion distance before and after the transition surface 220 ensures the consistency of the extrusion action of the film 700. In this embodiment, see [reference needed]. Figure 2 The extrusion section 200 is spherical in shape. The first arc surface 210 is the lower part of the sphere, the second arc surface 230 is the upper part, and the transition surface 220 is an annular recess that is concave relative to the spherical surface. In this structure, the first arc surface 210 gradually expands from bottom to top, and the second arc surface 230 gradually expands from top to bottom. The first extrusion point 211 corresponding to the first arc surface 210 is the connecting line connecting to the transition surface 220, and the second extrusion point 231 corresponding to the second arc surface 230 is the connecting line connecting to the transition surface 220. With this configuration, when the first arc surface 210 acts on the membrane 700, it can gradually expand, pushing the membrane 700 to the inner wall of the sealed container 500. The spherical structure is beneficial to the forming process of the puncture head. The transition surface 220 is formed after subsequent processing, or the extrusion section 200 of the puncture head can be integrally formed to facilitate mold making.

[0046] In addition, the puncture head also includes an outer portion 400, which, in the opposite direction to the compression portion 200, can engage with an external component. For example, the outer portion 400 may be a fixed shaft, and the external component may be a robotic arm, telescopic arm, or motor-driven component connected to the fixed shaft, thereby driving the entire puncture head to move and perform operations such as puncture, pickup, and transfer. (See also...) Figure 1 When the external part 400 is a fixed shaft, the end of the fixed shaft away from the puncture part 100 has a shaft fixing part 410. The mechanical arm driven by the motor has a joint that engages with the shaft fixing part 410. The mechanical arm has guide rails in the XYZ directions and a corresponding motor on each guide rail. When the motor on the corresponding shaft moves, the puncture head can be moved by the mechanical arm that moves on the guide rail of the corresponding shaft.

[0047] This utility model also provides a product assembly containing the aforementioned puncture head, which can be used in combination and includes a puncture head for medical devices, a closed container 500, and a cover member 600.

[0048] See Figure 9 and Figure 10 The sealed container 500 includes a container body 510 and a sealing membrane. The container body 510 has a receiving chamber 511 and a container opening 530 communicating with the receiving chamber 511. The receiving chamber 511 is used to store reagents or other reaction liquids or other media. The sealing membrane can be sealed to the container opening 530 by means of adhesive bonding or pressing, or it can be fixed and sealed by heat pressing. It can be punctured by external sharp points. The container body 510 has an opening 520 located inside the container opening 530. The opening 520 has a membrane receiving wall 521, a first conical sidewall 522, and an assembly protrusion 523 arranged sequentially along the depth direction of the container opening 530. This structure has been described in the previous embodiments and will not be repeated here.

[0049] See Figure 11 and Figure 12 The cover member 600 includes a sealing part 610 and a connecting part 620. The sealing part 610 can be assembled onto the container body 510 and seal the receiving chamber 511. The opening 520 of the closed container 500 has a sealing joint 524. The sealing part 610 has a sealing protrusion 611 that can be sealed and engaged with the sealing joint 524. The sealing protrusion 611 has a raised ring structure on the outer side wall of the cover member 600. The sealing joint 524 includes a sealing arc shape. When the cover member 600 is assembled onto the closed container 500, the sealing protrusion 611 is interference-fitted onto the sealing arc shape. The connecting part 620 and the sealing part 610 have their axes coincided, and there is a stepped surface 630 between them. The connecting part 620 is used to cooperate with the piercing head and has a first assembly part 621. The corresponding radius of the connecting part 620 relative to the axis is greater than the corresponding radius of the sealing part 610 relative to the axis. Thus, a stepped surface 630 is formed between the connecting part 620 and the sealing part 610 arranged in the axial direction. The corresponding radius of the connecting part 620 is greater than the corresponding radius of the container opening 530. Therefore, the connecting part 620 cannot enter the closed container 500. The stepped surface 630 acts as a limiting surface to restrict the cover member 600 on the opening 520 and indicates that the cover member 600 has been assembled in place on the closed container 500 when restricted. The sealing protrusion 611 seals on the sealing arc.

[0050] The puncture head can be assembled with both the sealed container 500 and the cap component 600. The sealed container 500 has a corresponding second assembly portion located between the receiving chamber 511 and the container opening 530. This second assembly portion does not obstruct the compression process of the extrusion portion 200 on the membrane 700. On the sealed container 500, this manifests as a protruding structure extending towards the axis of the sealed container 500, as shown in the assembly protrusion 523 in the aforementioned embodiment. The puncture head has a positioning portion that mates with the first assembly portion 621 and the second assembly portion. This positioning portion is used to pick up either the sealed container 500 or the cap component 600. The positioning portion can be a single connecting structure or composed of two different connecting structures. When the positioning portion is a single connecting structure, such as an assembly recess, this assembly recess can mate with the first assembly portion 621 and the second assembly portion, allowing the puncture head to pick up both the sealed container 500 and the cap component 600 through the assembly recess. (See also...) Figure 2 When the positioning part consists of two different combined structures, including a first positioning part and a second positioning part, the first positioning part is located on the extrusion part 200 and is manifested as the transition surface 220 that is recessed away from the center line in the aforementioned embodiment. The second positioning part is located between the expansion part 120 and the extrusion part 200 and is manifested as the clamping part 300 in the aforementioned embodiment. The connecting part 620 of the cover member 600 is provided with a connecting chamber 622 inside. The extrusion part 200 of the puncture head can be housed in the connecting chamber 622. The first assembly part 621 can be implemented as an inner protrusion in the connecting chamber 622. The first assembly part 621 cooperates with the first positioning part to enable the puncture head to pick up the cover member 600. The second assembly part cooperates with the second positioning part to enable the puncture head to pick up the closed container 500.

[0051] The product components in this embodiment are shown in the attached document. Figures 1 to 12 The piercing head is positioned in the corresponding assembly part of the closed container 500. During the piercing process, it can pick up the closed container 500 simply by continuing to move in the piercing direction. After moving to the destination, it continues to pick up the cover component 600 using the corresponding assembly part and seals the cover component 600 onto the closed container 500. This allows the piercing head in this product assembly to be used with the corresponding closed container 500 and cover component 600, eliminating the need for additional grippers or other picking robots to grasp and seal the closed container 500 and cover component 600, significantly improving the equipment's processing efficiency.

[0052] Finally, it should be noted that the above description is merely the preferred embodiment of this utility model and is not intended to limit the utility model in any way. Any person skilled in the art can make many possible changes and simple substitutions to the technical solution of this utility model using the disclosed methods and technical content without departing from the scope of the technical solution of this utility model, and these all fall within the protection scope of the technical solution of this utility model.

Claims

1. A puncture head for a medical device, characterized in that, include: The puncture portion is capable of puncturing the membrane of a closed container with an opening along the puncture direction. The puncture portion has a puncture tip and an expansion portion that gradually deviates in the opposite direction to the puncture tip, the opposite direction being the opposite of the puncture direction. The extrusion section, located in the opposite direction to the expansion section and with its edge engaging the expansion section, has an extrusion portion protruding away from the centerline of the extrusion section. The extrusion portion includes a first arc surface, a transition surface, and a second arc surface arranged sequentially along the opposite direction. The first arc surface has a maximum distance L1 relative to the center line, the second arc surface has a maximum distance L2 relative to the center line, and the transition surface has a maximum distance L3 relative to the center line, wherein L2 ≥ L1 > L3.

2. The puncture head according to claim 1, characterized in that, The puncture head further includes a clamping portion between the compression portion and the puncture portion, the clamping portion having a concave surface extending away from the centerline of the compression portion, the concave surface being used to mate with the assembly portion of the sealed container to pick up the sealed container. Wherein, the distance between all surfaces of the clamping portion including the concave surface and the center line is less than the maximum distance between the first arc surface and the center line.

3. The puncture head according to claim 2, characterized in that, The concave surface includes a first clamping surface recessed away from the centerline, and the clamping portion further includes a limiting surface disposed in the puncture direction and connected to the first clamping surface. The first clamping surface has a minimum distance L4 relative to the center line, the limiting surface has a maximum distance L5 relative to the center line, and all surfaces of the limiting surface are at a distance greater than L4 from the center line. Furthermore, L1 > L5 > L4.

4. The puncture head according to claim 1, characterized in that, The transition surface is a second clamping surface that is recessed away from the center line.

5. The puncture head according to claim 1, characterized in that, The expansion portion includes at least two blades connected to the piercing tip, the at least two blades being arranged around the periphery of the piercing tip.

6. The puncture head according to claim 5, characterized in that, The puncture section also includes a venting groove located between the two blades, the venting groove extending from the puncture section to the compression section.

7. The puncture head according to claim 1, characterized in that, The first arc surface and the second arc surface are spheres with the same diameter, and the first connecting line connecting the first arc surface to the transition surface has a corresponding maximum distance L1 relative to the center line, and the second connecting line connecting the second arc surface to the transition surface has a corresponding maximum distance L2 relative to the center line.

8. The puncture head according to claim 1, characterized in that, The maximum distance L1 of the first arc surface relative to the center line is equal to the maximum distance L2 of the second arc surface relative to the center line.

9. The puncture head according to claim 1, characterized in that, The puncture head also includes an external portion located in the opposite direction to the compression portion and capable of engaging with an external component.

10. A product component containing a puncture head, characterized in that, Including the puncture head, sealing container, and capping member for medical devices as described in claim 1, wherein the sealing container comprises: A container body having a receiving chamber and a container opening communicating with the receiving chamber; A sealing film is used to cover the opening of the container; The cover component includes: A sealing part is capable of being fitted onto the container body and sealing the receiving chamber; The connecting portion has a first mounting portion; The container body also has a second assembly part located between the receiving chamber and the container opening. The piercing head also includes a positioning part that can cooperate with the first assembly part and the second assembly part, and can pick up the closed container or the cover component through the positioning part.

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