A collection device for piercing a barrier to collect a liquid

Abstract

The application relates to the field of medical supplies, and provides a collection device for piercing a barrier to collect liquid, which comprises a shell and a puncture assembly, the shell comprises a contact surface, a collection opening and a coupling part, the coupling part has a collection channel in communication with the collection opening; the collection device further comprises a collector detachably connected with the shell through the coupling part; the collector comprises a connecting head detachably connected with the coupling part, a storage tube and a negative pressure tube in communication with the storage tube, the storage tube is located between the connecting head and the negative pressure tube, the negative pressure tube has a pressure lower than atmospheric pressure, and the storage tube is in communication with the collection channel through the connecting head. The collection device provided in the application is convenient to operate, can be operated and used by a user personally, does not need to be completed by a professional in a hospital, can conveniently collect peripheral blood, and greatly reduces the pain during blood collection.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical supplies, in particular to a collection device for piercing a barrier to collect liquid and a blood collection device for piercing the skin to collect blood. BACKGROUND

[0002] Sampling is the first step of detecting health indicators of the human body. A safe and effective sampling method can not only ensure that the person being tested is not infected or harmed during the sampling process, but also improve the accuracy of the detection after sampling, and early detection of diseases in the body. The sampling of human body fluids, especially blood sampling, accounts for a large number of items in human body detection.

[0003] Today, there are mainly two ways to sample human blood: venous blood and fingertip blood. The venous blood needle needs to be inserted into the venous blood vessel when collecting blood, and the fingertip blood needle needs to be squeezed hard when collecting blood. This not only brings physical discomfort to the patient, but also easily causes red blood cell rupture and hemolysis due to the squeezing blood collection method, affecting the accuracy of subsequent detection.

[0004] The above-mentioned blood collection method or blood collection device needs to be completed by a professional in a hospital, and inevitably causes pain. Children often resist such blood collection methods.

[0005] Therefore, the present application is proposed. SUMMARY

[0006] The present application provides a collection device for piercing a barrier to collect liquid and a blood collection device for piercing the skin to collect blood, to solve the above-mentioned technical problems.

[0007] The first aspect of the present application provides a collection device for piercing a barrier to collect liquid, the collection device comprising a housing having a receiving space and a piercing assembly at least partially received in the receiving space, the housing comprising a contact surface in contact with the barrier, and a collection opening provided in the contact surface; the piercing assembly is movable relative to the contact surface and is used to pierce the barrier through the collection opening; the housing further comprises a coupling portion spaced apart from the collection opening, the coupling portion having a collection channel in communication with the collection opening; the collection device further comprises a collector detachably connected to the housing through the coupling portion; the collector comprises a connector detachably connected to the coupling portion, a storage tube extending from the connector, and a negative pressure tube in communication with the storage tube, the storage tube being located between the connector and the negative pressure tube, the negative pressure tube having a pressure lower than atmospheric pressure, and the storage tube being in communication with the collection channel through the connector.

[0008] The collecting device provided by the scheme is used to first attach the contact surface to the barrier, and after the collecting opening pierces the barrier, the liquid in the barrier is sucked out under the negative pressure suction of the negative pressure tube, and the liquid flows to the storage tube through the collecting channel.

[0009] The collecting device provided by the application is convenient to operate and can be operated by a user personally without the need of professional personnel in a hospital, so that the peripheral blood collection can be conveniently performed and the pain during blood collection is greatly reduced.

[0010] In other preferred schemes, one of the coupling part and the connecting head comprises a hollow tubular piercing member with two open ends, and the other comprises a puncturable sealing member corresponding to the piercing member, and when the coupling part is connected to the connecting head, the piercing member pierces the puncturable sealing member and connects the storage tube and the collecting channel.

[0011] The piercing member and the puncturable sealing member are used in cooperation, the puncturable sealing member is in a closed state before the collector is inserted into the shell, when the coupling part is connected to the connecting head, the piercing member pierces the puncturable sealing member and connects the storage tube and the collecting channel, so that the liquid in the barrier is conveniently sucked into the storage tube.

[0012] In other preferred schemes, the orthographic projection of the coupling part on the contact surface is located outside the collecting opening, and the coupling part is not arranged directly above the collecting opening, so that the overall structure of the device can be optimized and the size of the collecting device is prevented from being too high.

[0013] In other preferred schemes, the collector further comprises a capillary tube connected to the storage tube, and the storage tube is connected to the negative pressure tube through the capillary tube.

[0014] In order to improve the negative pressure suction of the negative pressure tube to the storage tube, the collector further comprises a capillary tube connected to the storage tube, and the storage tube is connected to the negative pressure tube through the capillary tube. One of the functions of the capillary tube is to connect the negative pressure tube and the storage tube, and to act as a negative pressure transmission function. In addition, the capillary tube is also used for liquid volume quantification and indication. When the liquid enters the storage tube, as the liquid volume increases, when the liquid surface contacts the capillary tube, the liquid will not continue to fill the storage tube, but will overflow from the capillary tube and flow into the negative pressure tube, so as to achieve the effect of liquid quantification and indication. The capillary tube is made of transparent material, and is generally made of hydrophobic plastic material such as PC or PET.

[0015] In other preferred schemes, the storage tube comprises a first open end corresponding to the connection of the connecting head, and a second open end opposite to the first open end, a first sealing member is sleeved in the second open end, and the capillary tube is fixed through the first sealing member and extends into the storage tube through the second open end.

[0016] When the blood in the storage tube reaches the required amount, the upper end of the blood reaches the lower end of the capillary tube, and the blood entering the capillary tube can be obviously observed, and then the blood collection process is terminated to meet the blood collection requirement. The capillary tube not only connects the negative pressure between the negative pressure tube and the storage tube, but also plays an indicating role when the blood collection amount reaches the requirement.

[0017] In other preferred embodiments, the negative pressure tube is coaxially sleeved outside the storage tube, and the collector further comprises a second sealing member clamped between the outer wall of the storage tube and the inner wall of the negative pressure tube.

[0018] In this embodiment, the negative pressure tube is coaxially sleeved outside the storage tube, and the collector further comprises a second sealing member clamped between the outer wall of the storage tube and the inner wall of the negative pressure tube, so that a vacuum space is formed between the inner wall of the negative pressure tube and the outer wall of the storage tube, and the vacuum space is communicated with the storage tube through the capillary tube. The arrangement of the first sealing member and the second sealing member can ensure that the negative pressure tube and the storage tube are only communicated through the capillary tube, thereby ensuring the sealing performance of the device.

[0019] In other preferred embodiments, the outer wall of the storage tube is provided with a positioning portion, one end of the negative pressure tube close to the connecting head abuts on one side of the positioning portion away from the first open end, and part of the second sealing member is clamped between the positioning portion and the negative pressure tube.

[0020] In order to facilitate the connection of the storage tube and the vacuum tube, the outer wall of the storage tube is provided with a positioning portion, and the positioning portion is used for positioning the installation position of the vacuum tube relative to the storage tube. Specifically, one end of the negative pressure tube close to the connecting head abuts on one side of the positioning portion away from the first open end, part of the second sealing member is clamped between the positioning portion and the negative pressure tube, and the other part of the second sealing member is clamped between the inner wall of the vacuum tube and the outer wall of the storage tube, so as to avoid the communication between the negative pressure tube and the outside.

[0021] In other preferred embodiments, the connecting head comprises a puncturable sealing member for sealing the first open end. In this embodiment, the puncturable sealing member is arranged on the collector, and the puncture portion is arranged on the coupling portion.

[0022] In other preferred embodiments, the puncturable sealing member comprises a fixed portion located outside the open end and having a size greater than the diameter of the storage tube, and a puncture portion extending from the fixed portion to the inside of the open end and matching the diameter of the storage tube.

[0023] In other preferred embodiments, the connecting head further comprises a crown cap sleeved on the outer periphery of the fixed portion and extending to the outer periphery of the storage tube. The arrangement of the crown cap can fix the fixed portion to a certain extent, so as to avoid the separation of the fixed portion from the first open end.

[0024] In other preferred schemes, the fixed part is provided with a recessed groove extending to the puncture part, and the puncture member punctures the puncture part and communicates with the storage tube through the recessed groove when the connector is connected with the coupling part.

[0025] The present application provides, in a second aspect, a blood sampling device for puncturing skin to collect blood, the blood sampling device comprising a housing, an actuator movable relative to the housing, and a puncture assembly associated with the actuator, the housing being provided with a collection opening corresponding to the puncture assembly:

[0026] The housing further comprises a coupling part provided in a spaced manner with the collection opening, the coupling part having a collection channel in communication with the collection opening; the blood sampling device further comprises a collector detachably connected with the housing through the coupling part, an extension direction of the collector when connected with the coupling part being arranged in parallel with and non-coaxially with a movement direction of the puncture assembly; the collector comprises: a negative pressure tube, the inside of the negative pressure tube comprising a first cavity of a negative pressure environment; a storage tube, the storage tube being connected in a breakable manner inside the negative pressure tube, the inside of the storage tube comprising a second cavity; wherein the first cavity and the second cavity are in communication, and when blood circumscribes the second cavity, the blood is introduced into the second cavity under the action of negative pressure.

[0027] In other preferred schemes, the storage tube further comprises: a capillary tube, the first cavity and the second cavity being in communication through the capillary tube.

[0028] In other preferred schemes, the blood sampling device further comprises: a second seal, the second seal being arranged between an inner wall of the negative pressure tube and an outer wall of the storage tube, for sealing a gap between the negative pressure tube and the storage tube.

[0029] In other preferred schemes, the storage tube comprises: a puncturable seal arranged at one end of the storage tube outside the negative pressure tube; a first seal arranged at one end of the storage tube inside the negative pressure tube; wherein the capillary tube passes through the first seal to make the negative pressure tube and the storage tube in communication, and the capillary tube extends from the first seal to the puncturable seal.

[0030] In other preferred schemes, the puncturable seal is connected with a blood drainage tube, one end of the blood drainage tube passing through the puncturable seal to communicate with the inside of the second cavity, and the other end being in communication with external blood.

[0031] In other preferred schemes, the storage tube further comprises a crown cap, the crown cap covering the puncturable seal.

[0032] In other preferred schemes, a scale is provided on the capillary and / or the storage tube for indicating the amount of blood collected in the storage tube.

[0033] Compared with the prior art, the present application has the following beneficial effects:

[0034] The collection device provided in the scheme is used by first attaching the contact surface to the barrier, then inserting the collector into the shell, making the connecting head of the collector cooperate with the coupling part, driving the puncture assembly to move relative to the contact surface, and puncturing the barrier through the collection opening. Under the negative pressure suction of the negative pressure tube, the liquid in the barrier is sucked out, and the liquid flows to the storage tube through the collection channel.

[0035] The collection device provided in the present application is easy to operate and can be operated by a user personally without the need for a professional person in a hospital to complete the operation. The collection device can facilitate peripheral blood collection and greatly reduce the pain during blood collection.

[0036] When the blood in the storage tube reaches the required amount, the upper end surface of the blood reaches the lower end of the capillary. Since the blood entering the capillary can be obviously observed, the blood collection process is terminated immediately, and the blood collection requirement is met. The capillary not only connects the negative pressure between the negative pressure tube and the storage tube, but also plays an indicating role when the blood collection amount reaches the required amount. One end of the capillary is located at the volume center position of the storage tube. After the blood collection reaches half, the collector can be observed in the capillary regardless of the angle of the collector, indicating that the blood collection has reached the designed amount. The collection can be completed. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. Those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0038] Figure 1 A structural schematic diagram of a specific collection device provided by the present application;

[0039] Figure 2 A top view of a specific collection device provided by the present application;

[0040] Figure 3 A Figure 2 A-A sectional view;

[0041] Figure 4 A structural schematic diagram of another specific blood collection device provided by the present application;

[0042] Figure 5AA perspective view of a specific collector provided by the present application;

[0043] Figure 5B A perspective view of a specific collector provided by the present application; Figure 5A An exploded view of the collector shown in FIG. 1;

[0044] Figure 5C A perspective view of the collector shown in FIG. 1 along the B-B line; Figure 5A A perspective view of the collector shown in FIG. 1 along the B-B line;

[0045] Figure 6 Partial structural schematic views of the collector provided by the present application at three different angles.

[0046] Legend of reference signs:

[0047] 100, housing; 110, contact surface; 120, collection opening; 130, coupling portion; 131, collection channel; 132, piercing member;

[0048] 200, puncture assembly; 210, driving component; 211, driving shaft; 212, driving elastic member;

[0049] 300, collector; 310, connecting head; 311, pierceable seal; 3111, fixed portion; 3112, puncture portion; 3113, avoidance groove; 320, storage tube; 3201, second cavity; 321, first open end; 322, second open end; 330, negative pressure tube; 3301, first cavity; 340, capillary tube; 350, first seal; 360, second seal; 370, positioning portion; 380, crown cover;

[0050] 400, barrier. DETAILED DESCRIPTION

[0051] In order to make the above and other features and advantages of the present application clearer, the present application will be further described below with reference to the drawings. It should be understood that the specific examples given herein are for illustrative purposes only and are not limiting.

[0052] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0053] In addition, the terms "first", "second", or the like are used only to describe different features, and do not imply or suggest relative importance or a specific number of the features being referred to. Thus, features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0054] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0055] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0056] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0057] Please refer to Figures 1-4 The first aspect of the present application provides a collection device for piercing a barrier to collect liquid, which can be used to pierce the skin to collect blood, and can also be applied to various scientific research, clinical and physical health testing environments requiring peripheral blood sampling.

[0058] The collection device provided by the present invention includes a housing 100 having a receiving space and a puncture component 200 at least partially housed within the receiving space. The puncture component 200 is used to puncture a barrier 400. The housing 100 includes a contact surface 110 that contacts the barrier 400 and a collection opening 120 formed on the contact surface 110. During collection, the contact surface 110 is fitted against the barrier 400. The puncture component 200 is movable relative to the contact surface 110 and is used to puncture the barrier 400 through the collection opening 120. The housing 100 also includes a coupling portion 130 spaced apart from the collection opening 120. The coupling portion 130 has a collection channel 131 communicating with the collection opening 120. Liquid enters the housing 100 from the collection opening 120 and... The collection device also includes a collector 300 that is detachably connected to the housing 100 via a coupling part 130. The collector 300 can serve as the initiator of the blood collection device and the liquid collector 300. The collector 300 includes a connector 310 that is detachably connected to the coupling part 130, a storage tube 320 extending from the connector 310, and a negative pressure tube 330 communicating with the storage tube 320. The storage tube 320 is located between the connector 310 and the negative pressure tube 330. The negative pressure tube 330 has a pressure lower than atmospheric pressure. The storage tube 320 is connected to the collection channel 131 via the connector 310. The negative pressure tube 330 can draw liquid from the collection opening 120 into the storage tube 320 via the collection channel 131.

[0059] Optionally, in other embodiments, the contact surface 110 is recessed in a direction away from the barrier 400 to form a groove. The groove includes a bottom wall opposite to the barrier 400 and a surrounding wall extending from the bottom wall toward the barrier 400 and connecting the contact surface 110 and the bottom wall. The bottom wall has a central portion protruding in the direction of the barrier 400 and spaced apart from the surrounding wall. The collection port is arranged around the outer periphery of the central portion and located between the surrounding wall and the central portion, forming a blood collection chamber. The collection opening 120 is disposed in the blood collection chamber. When the puncture component 200 punctures the barrier 400, it facilitates the faster backflow of liquid into the blood collection device and into the collection device through the flow channel, thereby reducing the injured area and reducing pain.

[0060] Optional, such as Figure 3 As shown, the acquisition device in this solution also includes a driving component 210 connected to the puncture assembly 200. The driving component 210 is used to drive the puncture assembly 200 to move and pass through the acquisition opening 120 for acquisition. The driving component 210 includes a driving shaft 211 connected to the needle puncture assembly 200, and a driving elastic member 212 connected to the driving shaft 211. The driving elastic member 212 can push the driving shaft 211 and drive the puncture assembly 200 to move out of the housing 100 to the acquisition position.

[0061] The blood sampling device further comprises a limiting part which can abut against part of the puncture assembly 200 and limit the movement of the puncture assembly 200. When the limiting part is separated from the puncture assembly 200, the limiting effect on the puncture assembly 200 is removed. At this time, under the action of the driving shaft 211 and the driving elastic member 212, the puncture assembly 200 will pass through the collection opening 120 and out of the shell 100 to pierce the barrier 400.

[0062] The collection device provided in the scheme is used by first attaching the contact surface 110 to the barrier 400, then inserting the collector 300 into the shell 100 so that the connecting head 310 of the collector 300 cooperates with the coupling part 130, drives the puncture assembly 200 to move relative to the contact surface 110, and pierces the barrier 400 through the collection opening 120. Under the negative pressure suction of the negative pressure tube 330, the liquid in the barrier 400 is sucked out and flows to the storage tube 320 through the collection channel 131.

[0063] The collection device provided in the scheme is convenient to operate and can be operated by a user personally without the need for a professional in a hospital to complete the operation. The collection device can conveniently collect peripheral blood and greatly reduces the pain during blood collection.

[0064] Further, one of the coupling part 130 and the connecting head 310 comprises a hollow tubular piercing member 132 with both ends open, and the other comprises a pierceable sealing member 311 corresponding to the piercing member 132. When the coupling part 130 and the connecting head 310 are connected, the piercing member 132 pierces the pierceable sealing member 311 to communicate the storage tube 320 with the collection channel 131.

[0065] In the embodiment, the coupling part 130 is arranged in the shell 100. One of the coupling part 130 and the connecting head 310 comprises a hollow tubular piercing member 132 with both ends open, and the other comprises a pierceable sealing member 311 corresponding to the piercing member 132. The piercing member 132 communicates with the collection channel 131. When the coupling part 130 and the connecting head 310 are connected, the piercing member 132 pierces the pierceable sealing member 311 to communicate the storage tube 320 with the collection channel 131.

[0066] The embodiment provides two schemes for realizing the communication between the coupling part 130 and the connecting head 310. Scheme one (as shown in Figure 4 The piercing member 132 is arranged on the coupling part 130 in the shell 100, and the pierceable sealing member 311 is arranged on the connecting head 310 of the collector 300. Scheme two is to arrange the pierceable sealing member 311 on the coupling part 130 in the shell 100 and arrange the piercing member 132 on the connecting head 310 of the collector 300. Since the piercing member 132 is a hollow tubular structure with both ends open, both schemes can communicate the collection channel 131 with the storage tube 320 when the connecting head 310 and the coupling part 130 are connected.

[0067] The piercing member 132 is used in cooperation with the penetrable seal 311, which is in a closed state before the collector 300 is inserted into the housing 100, and when the coupling portion 130 is connected with the connector 310, the piercing member 132 pierces the penetrable seal 311 and communicates the storage tube 320 with the collection channel 131, thereby facilitating the suction of the liquid in the barrier 400 into the storage tube 320.

[0068] Optionally, the projection of the coupling portion 130 on the contact surface 110 is located outside the collection opening 120, and the coupling portion 130 is not directly arranged above the collection opening 120, thereby optimizing the overall structure of the device and avoiding excessive size of the collection device.

[0069] Further, the collector 300 further comprises a capillary tube 340 connected with the storage tube 320, and the storage tube 320 is communicated with the negative pressure tube 330 through the capillary tube 340.

[0070] To improve the negative pressure suction of the negative pressure tube 330 to the storage tube 320, the collector 300 further comprises a capillary tube 340 connected with the storage tube 320, and the storage tube 320 is communicated with the negative pressure tube 330 through the capillary tube 340. One of the functions of the capillary tube is to communicate the negative pressure tube 330 and the storage tube 340, and to transfer the negative pressure. In addition, the capillary tube is also used for liquid volume quantification and indication. When the liquid enters the storage tube 340, as the amount of liquid increases, when the liquid surface contacts the capillary tube, the liquid will not continue to fill the storage tube, but will overflow from the capillary tube and flow into the negative pressure tube, thereby achieving the effect of liquid quantification and indication. The capillary tube is made of transparent material, generally hydrophobic plastic material such as PC or PET.

[0071] Further, as shown in Figures 5A-5C the storage tube 320 comprises a first open end 321 corresponding to the connection of the connector 310, and a second open end 322 opposite to the first open end 321, and the second open end 322 is sleeved with a first seal 350, and the capillary tube 340 is fixedly penetrated in the first seal 350 and extends into the storage tube 320 through the second open end 322.

[0072] When the blood in the storage tube 320 reaches the required amount, the upper end surface of the blood reaches the lower end of the capillary tube 340. Since the blood entering the capillary tube 340 can be obviously observed, the blood collection process is terminated immediately, and the blood collection requirement is achieved. The glass capillary tube 340 not only realizes the negative pressure communication between the negative pressure tube 330 and the storage tube 320, but also plays an indication role when the blood collection amount reaches the requirement.

[0073] Further, the negative pressure tube 330 is coaxially sleeved outside the storage tube 320, and the collector 300 further comprises a second sealing member 360 clamped between the outer wall of the storage tube 320 and the inner wall of the negative pressure tube 330.

[0074] In the scheme, the negative pressure tube 330 is coaxially sleeved outside the storage tube 320, and the collector 300 further comprises a second sealing member 360 clamped between the outer wall of the storage tube 320 and the inner wall of the negative pressure tube 330, so that a vacuum space is formed between the inner wall of the negative pressure tube 330 and the outer wall of the storage tube 320, and the vacuum space is communicated with the storage tube 320 through the capillary tube 340. The arrangement of the first sealing member 350 and the second sealing member 360 can ensure that the negative pressure tube 330 and the storage tube 320 can only be communicated through the capillary tube 340, thereby ensuring the sealing performance of the device.

[0075] Further, the outer wall of the storage tube 320 is provided with a positioning portion 370, and one end of the negative pressure tube 330 close to the connecting head 310 abuts on one side of the positioning portion 370 away from the first open end 321, and part of the second sealing member 360 is clamped between the positioning portion 370 and the negative pressure tube 330.

[0076] In order to facilitate the connection of the storage tube 320 and the negative pressure tube 330, the outer wall of the storage tube 320 is provided with a positioning portion 370, and the positioning portion 370 is used to position the installation position of the vacuum tube relative to the storage tube 320. Specifically, one end of the negative pressure tube 330 close to the connecting head 310 abuts on one side of the positioning portion 370 away from the first open end 321, and part of the second sealing member 360 is clamped between the positioning portion 370 and the negative pressure tube 330, and another part of the second sealing member 360 is clamped between the inner wall of the negative pressure tube 330 and the outer wall of the storage tube 320, thereby avoiding the communication between the negative pressure tube 330 and the outside.

[0077] Further, the puncturable sealing member 311 comprises a fixed portion 3111 located outside the first open end 321 and having a size greater than the diameter of the storage tube 320, and a puncture portion 3112 extending from the fixed portion 3111 to the first open end 321 and matching the diameter of the storage tube 320. When the puncturable sealing member 311 is docked with the coupling portion 130, the puncture member 132 will pierce the puncture portion 3112. The fixed portion 3111 is provided with an avoidance groove 3113 extending to the puncture portion 3112, and when the connecting head 310 is connected with the coupling portion 130, the puncture member 132 will pierce the puncture portion 3112 through the avoidance groove 3113 and be communicated with the storage tube 320.

[0078] Optionally, the connecting head 310 further comprises a crown cover 380 sleeved on the outer periphery of the fixed portion 3111 and extending to the outer periphery of the storage tube 320. The arrangement of the crown cover 380 can play a certain fixing role on the fixed portion 3111, thereby avoiding the disengagement of the fixed portion 3111 from the first open end 321.

[0079] The application provides a blood sampling device for pricking skin to collect blood in a second aspect. The blood sampling device comprises a housing 100, an actuator (corresponding to the driving component 210 in the first aspect) movable relative to the housing 100, and a puncture assembly 200 associated with the actuator. The housing 100 is provided with a collection opening 120 corresponding to the puncture assembly 200.

[0080] The housing 100 further comprises a coupling portion 130 spaced apart from the collection opening 120, the coupling portion 130 having a collection channel 131 in communication with the collection opening 120. The blood sampling device further comprises a collector 300 detachably connected to the housing 100 via the coupling portion 130. When the collector 300 is connected to the coupling portion 130, the extension direction of the collector 300 is parallel to and non-coaxial with the movement direction of the puncture assembly 200. The collector 300 comprises a negative pressure tube 330, the inside of the negative pressure tube 330 comprising a first cavity 3301 in a negative pressure environment; and a storage tube 320 connected to the inside of the negative pressure tube 330 in a breakable manner, the inside of the storage tube 320 comprising a second cavity 3201. The first cavity 3301 and the second cavity 3201 are in communication. When blood is collected outside the second cavity 3201, the blood is introduced into the second cavity 3201 under the action of negative pressure.

[0081] Optionally, the storage tube 320 further comprises a capillary tube 340 and a second sealing member 360. The first cavity 3301 and the second cavity 3201 are in communication through the capillary tube 340. The second sealing member 360 is arranged between the inner wall of the negative pressure tube 330 and the outer wall of the storage tube 320, and is used to seal the gap between the negative pressure tube 330 and the storage tube 320. The storage tube 320 further comprises a crown cap 380 covering the puncturable sealing member 311, so as to ensure that the puncturable member 3112 can be stably fixed.

[0082] In a more preferred embodiment, the storage tube 320 comprises a puncturable sealing member 311 arranged at one end of the storage tube 320 outside the negative pressure tube 330; and a first sealing member 350 arranged at one end of the storage tube 320 inside the negative pressure tube 330. The capillary tube 340 passes through the first sealing member 350 to communicate the storage tube 320 and the negative pressure tube 330, and the capillary tube 340 extends from the first sealing member 350 to the puncturable sealing member 311.

[0083] Further, the puncturable sealing member 311 is connected with a blood drainage tube. One end of the blood drainage tube passes through the puncturable sealing member 311 to communicate with the inside of the second cavity 3201, and the other end communicates with blood outside.

[0084] When the blood in the storage tube 320 reaches the required amount, the upper end of the blood reaches the lower end of the capillary tube 340, and since the blood entering the capillary tube 340 can be obviously observed, the blood collection process is terminated, and the blood collection requirement is achieved.

[0085] In a specific embodiment, the negative pressure in the negative pressure tube 330 is -20 Kpa to -80 Kpa, which can be used to provide the negative pressure power for blood precipitation and blood collection. The piercing member 132 is a metal hollow needle (0.1-2 mm in diameter) arranged at the end of the collection channel 131. When the needle is pierced into the penetrable seal 311, the negative pressure tube 330 is in communication with the collection channel 131, and the collection channel 131 can reach the surface of the skin wound. By using the negative pressure in the negative pressure tube 330, blood is sucked out and flows to the negative pressure blood storage tube.

[0086] The storage tube 320 and the negative pressure tube 330 are sealed by a rubber plug to ensure that the negative pressure is not lost. The capillary tube 340 is fixed in the center of the inner rubber plug (i.e., the first seal 350) and penetrates the inner rubber plug to connect the negative pressure blood storage tube and the cavity of the negative pressure tube 330. When the metal hollow needle at the end of the collection channel 131 is pierced into the outer rubber plug (i.e., the penetrable seal 311), the negative pressure causes the blood to enter the storage tube 320 and collect in the storage tube 320. When the blood in the storage tube 320 reaches the required amount, the upper end of the blood reaches the lower end of the capillary tube 340, and since the blood entering the capillary tube 340 can be obviously observed, the blood collection process is terminated, and the blood collection requirement is achieved. The capillary tube 340 not only connects the negative pressure between the negative pressure tube 330 and the storage tube 320, but also serves as an indicator when the blood collection reaches the required amount. As shown in Figure 6 Figure 6 The three collectors 300 are shown in three different angles. After the blood collection reaches half, blood can be observed in the glass capillary tube 340 regardless of the angle of the collector 300, indicating that the blood collection has reached the designed amount, and the collection can be completed.

[0087] The collection device provided by the scheme is used by first attaching the contact surface 110 to the barrier 400, then inserting the collector 300 into the shell 100, and making the connecting head 310 of the collector 300 cooperate with the coupling part 130 to drive the puncture assembly 200 to move relative to the contact surface 110 and pierce the barrier 400 through the collection opening 120. Under the negative pressure suction of the negative pressure tube 330, the liquid in the barrier 400 is sucked out and flows to the storage tube 320 through the collection channel 131.

[0088] ​The collecting device is convenient to operate, can be operated by a user personally, does not need to be completed by a professional in a hospital, can conveniently collect peripheral blood, and greatly reduces pain during blood collection.

[0089] When the blood in the storage tube 320 reaches the required amount, the upper end of the blood reaches the lower end of the capillary tube 340, and the blood entering the capillary tube 340 can be obviously observed, and then the blood collection process is terminated, and the blood collection requirement is reached. The capillary tube 340 not only communicates the negative pressure between the negative pressure tube 330 and the storage tube 320, but also plays an indicating role when the blood collection reaches the required amount. After the blood collection reaches half, no matter what angle the collector 300 is in, the presence of blood in the capillary tube 340 can be observed, indicating that the blood collection has reached the designed required amount. The collection can be completed.

[0090] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A collection device for collecting liquid by piercing a barrier, the collection device comprising a housing having a receiving space, and a piercing assembly at least partially received in the receiving space, the housing comprising a contact surface for contacting the barrier, and a collection opening provided in the contact surface, and the piercing assembly being movable relative to the contact surface and configured to pierce the barrier through the collection opening, characterized in that: the housing further comprises a coupling portion spaced apart from the collection opening, the coupling portion having a collection channel in communication with the collection opening; the collection device further comprises a collector detachably connected to the housing via the coupling portion; the collector comprises a connector detachably connected to the coupling portion, a storage tube extending from the connector, and a negative pressure tube in communication with the storage tube, the storage tube being located between the connector and the negative pressure tube, the negative pressure tube having a pressure lower than atmospheric pressure, and the storage tube being in communication with the collection channel via the connector; and when the collector is connected to the coupling portion, an extension direction of the collector is parallel to and non-coaxial with a movable direction of the piercing assembly relative to the contact surface, and a normal projection of the coupling portion on the contact surface is located outside the collection opening. 2.The collection device for collecting liquid by piercing a barrier according to claim 1, characterized in that: one of the coupling portion and the connector comprises a hollow tubular piercing member having two open ends, and the other comprises a pierceable sealing member corresponding to the piercing member, and when the coupling portion and the connector are connected, the piercing member pierces the pierceable sealing member and connects the storage tube and the collection channel. The collector further comprises a capillary tube connected to the storage tube, and the storage tube is in communication with the negative pressure tube via the capillary tube. 4.The collection device for collecting liquid by piercing a barrier according to claim 3, characterized in that: the storage tube comprises a first open end corresponding to the connection of the connector, and a second open end opposite to the first open end, a first sealing member is sleeved in the second open end, and the capillary tube is fixedly penetrated through the first sealing member and extends into the storage tube via the second open end. 5.The collection device for collecting liquid by piercing a barrier according to claim 4, characterized in that: the negative pressure tube is coaxially sleeved outside the storage tube, and the collector further comprises a second sealing member clamped between an outer wall of the storage tube and an inner wall of the negative pressure tube. 6.The collection device for collecting liquid by piercing a barrier according to claim 5, characterized in that: the outer wall of the storage tube is convexly provided with a positioning portion, one end of the negative pressure tube close to the connector abuts on a side of the positioning portion away from the first open end, and part of the second sealing member is clamped between the positioning portion and the negative pressure tube. The connector comprises the pierceable sealing member sealing the first open end.

3. The collection device for collecting liquid by breaking a barrier according to claim 2, characterized in that: 8.The collection device for collecting liquid by piercing a barrier according to claim 7, characterized in that: ​ ​ ​ ​ ​ ​ 7. The collection device for collecting liquid by breaking a barrier of claim 4, wherein: ​ ​ The puncturable seal includes a fixed part outside the open end and larger than the diameter of the storage tube, and a puncture part extending from the fixed part to the open end and matching the diameter of the storage tube.

9. The collection device for collecting liquid by puncturing a barrier according to claim 8, characterized in that: The connecting head further includes a crown cap sleeved on the outer periphery of the fixed part and extending to the outer periphery of the storage tube.

10. The collection device for collecting liquid by puncturing a barrier according to claim 8, characterized in that: The fixed part is provided with a recess extending to the puncture part, and the puncture member punctures the puncture part through the recess and communicates with the storage tube when the connecting head is connected with the coupling part.

11. A blood collection device for collecting blood by puncturing skin, the blood collection device comprising a housing, an actuator movable relative to the housing, and a puncture assembly associated with the actuator, the housing being provided with a collection opening corresponding to the puncture assembly, the housing comprising a contact surface in contact with the skin, and the collection opening being formed in the contact surface, characterized in that: The housing further comprises a coupling part spaced apart from the collection opening, the coupling part having a collection channel in communication with the collection opening; the blood collection device further comprises a collector detachably connected with the housing through the coupling part, an extension direction of the collector when connected with the coupling part is parallel to and non-coaxial with a movement direction of the puncture assembly, and an orthographic projection of the coupling part on the contact surface is located outside the collection opening; The collector comprises: A negative pressure tube, the inside of the negative pressure tube comprising a first cavity of a negative pressure environment; A storage tube connected in a breakable manner inside the negative pressure tube, the inside of the storage tube comprising a second cavity; Wherein, the first cavity and the second cavity are in communication, and when the second cavity is circumscribed by blood, the blood is introduced into the second cavity under the action of negative pressure.

12. The blood sampling device for puncturing the skin to collect blood according to claim 11, wherein, The storage tube further comprises: A capillary, the first cavity and the second cavity being in communication through the capillary.

13. The lancing device for pricking the skin to collect blood of claim 12, wherein, The storage tube comprises: A puncturable seal provided at one end of the storage tube outside the negative pressure tube; A first seal provided at one end of the storage tube inside the negative pressure tube; Wherein, the capillary passes through the first seal to make the negative pressure tube and the storage tube in communication, and the capillary extends from the first seal to the puncturable seal.

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