No-residue filter infusion puncture set

Abstract

The present invention discloses a non-residue filtering infusion puncture device, which is characterized by comprising a first shell and a second shell that cover each other and form a gripping portion; the gripping portion has a filter chamber, and the filter chamber is provided with a filter membrane that divides the filter chamber into a liquid inlet chamber and a liquid outlet chamber; the side of the first shell has an anti-slip positioning portion and an air inlet hole, and the upper side of the first shell has a puncture portion, the puncture portion has a liquid outlet channel connected to the liquid inlet chamber and an air inlet channel connected to the air inlet hole, the liquid inlet of the liquid outlet channel is inclined, and when the infusion bottle plug is inserted, the liquid inlet of the liquid outlet channel can be supplied to the lowest liquid level in the infusion bottle; the lower side of the second shell has a liquid outlet tube, and the liquid outlet tube has a liquid outlet hole connected to the liquid outlet chamber. The present invention has the characteristics of simple structure, convenient use, flexibility and no residue in infusion.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a residue-free filtering infusion puncture device. Background Art

[0002] An infusion puncture device is a commonly used medical device, which is mainly used for intravenous drip. The structure of the puncture device on the current market mainly includes a handheld part, a connecting part located on the upper side of the handheld part, and a liquid outlet part located on the lower side of the handheld part. The handheld part is the basic part of the entire infusion puncture device. The connecting part is in the shape of a hollow cylindrical tube. One end of it is connected to the handheld part, and the other end forms a puncture head. The puncture head is a hook-like structure formed by obliquely cutting the end of the connecting part, so that when in use, the sharp corner of the puncture head can pierce the rubber stopper on the infusion bottle. A gas channel and a liquid channel are formed inside the connecting part and the handheld part. Gas is supplied to the inside of the infusion bottle through the gas channel, and the liquid channel is used for the outflow of the liquid medicine in the infusion bottle.

[0003] In actual use, the puncture device in the prior art has defects: 1. The structure is relatively complex, which is not conducive to automated production and also increases the production cost; 2. In order to improve the stability of the puncture head of the puncture device on the infusion bottle stopper, the puncture head of the puncture device needs to have a longer length, so that the longer puncture head is inserted deeper into the infusion bottle. In this case, the liquid medicine at the bottom of the infusion bottle cannot flow out, resulting in waste of the liquid medicine. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a residue-free filtering infusion puncture device, which has the characteristics of simple structure, convenient use, flexibility and no residue in infusion.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A residue-free filtering infusion puncture device, characterized in that: it includes a first shell and a second shell that are covered with each other and form a holding part;

[0007] A filter cavity is provided inside the holding part, and a filter membrane that divides the filter cavity into a liquid inlet chamber and a liquid outlet chamber is provided inside the filter cavity;

[0008] An anti-detachment positioning part and an air inlet hole are provided on the side surface of the first shell, and a puncture part is provided on the upper side surface of the first shell. An liquid outlet channel communicated with the liquid inlet chamber and an air inlet channel communicated with the air inlet hole are provided inside the puncture part. The liquid inlet of the liquid outlet channel is inclined, and when inserted into the infusion bottle stopper, the liquid inlet of the liquid outlet channel can allow the lowest liquid level in the infusion bottle to flow in;

[0009] A liquid outlet pipe is provided on the lower side surface of the second shell, and a liquid outlet hole communicated with the liquid outlet chamber is provided inside the liquid outlet pipe.

[0010] Preferably, a thickened area for arranging the anti - detachment positioning part and the air inlet hole is arranged on the side surface of the first shell, and a step is formed between the thickened area and the side surface of the first shell.

[0011] Preferably, the holding part is a flat cuboid structure.

[0012] Preferably, the anti - detachment positioning part is a positioning groove.

[0013] Preferably, the first shell and the second shell are made of the same material.

[0014] Preferably, the first shell and the second shell are respectively provided with a first groove and a second groove, and the groove wall of the first groove is clamped inside the groove wall of the second groove.

[0015] Preferably, the edge position of the filter membrane is clamped between the groove walls of the first groove and the second groove to form a fixation.

[0016] Preferably, the depth of the second groove gradually increases from top to bottom.

[0017] Preferably, support protrusions are arranged in the second groove.

[0018] Preferably, a threaded connection section is provided at the lower end position of the liquid outlet pipe.

[0019] The advantages of the present invention are as follows:

[0020] 1. The puncture device is formed by splicing the first shell and the second shell, and has the characteristics of simple structure and convenient production;

[0021] 2. Due to the arrangement of the anti - detachment positioning part, it can be used synchronously with the anti - detachment device. Therefore, the penetration depth of the puncture part into the infusion bottle stopper can be reduced, so that the liquid medicine in the infusion bottle can flow into the liquid inlet of the liquid outlet channel and flow out even when the liquid medicine in the infusion bottle is at the lowest liquid level;

[0022] 3. The liquid outlet pipe can facilitate the connection of the present invention with other instruments and is convenient for the present invention to be used as a solution filter for other instruments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the residue - free filtering type infusion puncture device provided by this embodiment;

[0024] Figure 2 It is a cross - sectional view of the residue - free filtering type infusion puncture device provided by this embodiment;

[0025] Figure 3 It is a schematic diagram of the second shell provided by this embodiment;

[0026] Figure 4Schematic diagram of the anti - detachment device used in conjunction with the trocar provided in this embodiment;

[0027] Figure 5 Another schematic diagram of the anti - detachment device used in conjunction with the trocar provided in this embodiment. Detailed implementation manners

[0028] Combined with Figures 1 to 5 Make a further description of the residue - free filtering infusion trocar of the present invention.

[0029] A residue - free filtering infusion trocar, characterized in that: it includes a first shell 1 and a second shell 2 that are covered with each other and form a holding part 3. A filter cavity 8 is provided in the holding part 3, and a filter membrane 7 is arranged in the filter cavity 8 to divide the filter cavity 8 into a liquid inlet chamber 82 and a liquid outlet chamber 81. An anti - detachment positioning part 4 and an air inlet hole 5 are provided on the side surface of the first shell 1, and a puncturing part 11 protruding from the holding part 3 is formed on the upper side surface of the first shell 1. A liquid outlet channel 112 communicating with the liquid inlet chamber 82 and an air inlet channel 111 communicating with the air inlet hole 5 are provided in the puncturing part 11. The height of the air outlet 1111 of the air inlet channel 111 is higher than the height of the liquid inlet 1121 of the liquid outlet channel 112. The liquid inlet 1121 of the liquid outlet channel 112 is inclined, and when inserted into the infusion bottle stopper, the liquid inlet 1121 of the liquid outlet channel 112 can allow the lowest liquid level in the inverted infusion bottle to flow in, achieving a residue - free infusion effect. A liquid outlet pipe 21 protruding from the holding part 3 is formed on the lower side surface of the second shell 2, and a liquid outlet hole 23 communicating with the liquid outlet chamber 81 is provided in the liquid outlet pipe 21.

[0030] Specifically, the opposite side surfaces of the first shell 1 and the second shell 2 are holding surfaces 13, 25. A thickened area 12 for arranging the anti - detachment positioning part 4 and the air inlet hole 5 is provided on the side surface of the first shell 1, that is, on the holding surface 13 of the first shell 1. An air filter membrane 6 is arranged in the air inlet hole 5. The thickened area 12 is located at a position close to the upper side of the holding surface 13 and protrudes from the holding surface 13. A step 121 is formed between the bottom surface of the thickened area 12 and the holding surface 13, so that the operator can apply an upward pushing force on this step surface to pierce the puncturing part 11 into the infusion bottle stopper. At the same time, in order to improve the comfort of applying force, the step 121 is an inclined structure.

[0031] The holding part 3 is a flat cuboid structure, which can increase the area of the holding surfaces 13, 25 to increase the contact area between the fingers and the holding surfaces 13, 25, and further improve the comfort of holding.

[0032] The anti - detachment positioning part 4 is a positioning groove, and the specific number of positioning grooves is set according to actual usage requirements. In this embodiment, two positioning grooves are provided and are located on the left and right sides of the air inlet hole 5. During use, the positioning groove can be connected to the anti - detachment device, playing the role of preventing the puncture device from detaching.

[0033] The first housing 1 and the second housing 2 are made of the same material. The first housing 1 and the puncture part 11 are of an integral structure, and the second housing 2 and the liquid outlet pipe 21 are of an integral structure. In this structure, it is not only convenient for the production of the first housing 1 and the second housing 2, but also convenient for their recycling and reuse.

[0034] The first housing 1 and the second housing 2 respectively have a first groove and a second groove 27. The first groove cooperates with the filter membrane 7 to form a liquid inlet chamber 82, and the second groove 27 cooperates with the filter membrane 7 to form a liquid outlet chamber 81. The groove wall 14 of the first groove is clamped inside the groove wall 26 of the second groove 27 to form a clamping structure, and at the same time, it is fixed by ultrasonic welding. The filter cavity 8 is formed by the docking combination of the first groove and the second groove 27.

[0035] On the inner side surface of the groove wall 26 of the second groove 27, there is a step 22. When the groove wall 14 of the first groove is inserted into the groove wall 26 of the second groove 27, the top surface 141 of the groove wall of the first groove abuts against this step 22. At the same time, the edge position of the filter membrane 7 is clamped between the top surface 141 of the groove wall of the first housing 1 and the step 22 of the groove wall of the second housing 2 to form a fixation.

[0036] The depth of the second groove 27 gradually increases from top to bottom. This structure can increase the liquid - containing capacity of the lower side position of the liquid outlet chamber 81, facilitating the liquid in the liquid outlet chamber 81 to fully flow into the liquid outlet pipe.

[0037] When filtering the liquid medicine, in order to avoid the deformation of the filter membrane 7, a plurality of support protrusions 24 are arranged in the second groove 27. These support protrusions are evenly distributed in the second groove 27 to support the middle part of the filter membrane.

[0038] At the lower end position of the liquid outlet pipe 21, there is a threaded connection section 28. Through the liquid outlet pipe 21 and the threaded connection section 28, the connection between the present invention and other medical devices can be realized. For example, the head of a syringe can be directly inserted into the liquid outlet pipe 21 to be connected with the present invention, serving as a filter for the syringe, and thus the liquid medicine in the syringe can be filtered.

[0039] An anti - detachment device used in conjunction with a residue - free filtering infusion puncture device. This anti - detachment device is an infusion safety clip, and its characteristics are as follows: It includes a chuck 10 and a positioning piece 9. The chuck 10 has a clamping groove 101 that can be clamped to the neck of the infusion bottle, and a left chuck plate 102 and a right chuck plate 103 for the operator to apply force to open the clamping groove 101. In this embodiment, the size of the notch 1011 of the clamping groove 101 is changed by deformation to be clamped to the neck of the infusion bottle or infusion bag, and the left chuck plate 102 and the right chuck plate 103 can improve the convenience of increasing the deformation of the notch 1011 of the clamping groove 101. The left chuck plate 102 and the right chuck plate 103 are respectively provided with an infusion needle resting groove 1021 and an infusion needle positioning hole 1032. The positioning piece 9 can be bent. One end of the positioning piece 9 is connected to the chuck 10, and the other end has a positioning portion 93 that cooperates with the anti - detachment positioning portion on the puncture device.

[0040] Both the infusion needle resting groove 1021 and the infusion needle positioning hole 1032 are of a structure extending vertically. On the side of the infusion needle resting groove 1021, there is a notch 10211 for the infusion needle to enter the infusion needle resting groove 1021 from the side. Specifically, when the infusion needle is placed, the infusion tube connected to the tail of the infusion needle enters the infusion needle resting groove 1021 from the side, and the size of the tail of the infusion needle is larger than the size of the upper opening of the infusion needle resting groove 1021. Therefore, the tail of the infusion needle is supported on the upper end wall of the infusion needle resting groove 1021.

[0041] The positioning piece 9 and the chuck 10 are of an integrally formed structure, that is, one end of the positioning piece 9 corresponding to the chuck 10 is connected to both the left chuck plate 102 and the right chuck plate 103 through a connecting portion. In this embodiment, the chuck 10 and the positioning piece 9 are made of plastic material, so the positioning piece 9 can be bent up and down relative to the chuck 10, which is convenient for positioning the positioning piece 9 on the puncture device.

[0042] The left chuck plate 102 and the right chuck plate 103 are located on the side of the clamping groove 101 facing away from the notch 1011, and the left chuck plate 102 and the right chuck plate 103 extend towards the side away from the clamping groove 101 to increase the length of the left chuck plate 102 and the right chuck plate 103, which is not only convenient for medical staff to contact and apply force, but also convenient for the placement or winding of the infusion tube.

[0043] In order to save the materials required for the left chuck plate 102 and the right chuck plate 103, the side of the left chuck plate 102 and the right chuck plate 103 facing away from the clamping groove 101 is thickened 104 for the setting of the infusion needle resting groove 1021 and the infusion needle positioning hole 1032, while the middle part of the left chuck plate 102 and the right chuck plate 103 only needs to ensure the thickness under normal strength.

[0044] The side wall of the infusion needle storage slot 1021 is provided with an infusion tube clamping slot 10212, the slot opening of which faces upwards, and the width of which gradually decreases from top to bottom. When the infusion tube needs to be cut off, the infusion tube is clamped into the clamping slot to deform the infusion tube and isolate the liquid medicine from passing through.

[0045] The infusion needle positioning hole 1032 is provided with a positioning film for the infusion needle to pass through, and the upper side of the right clamping plate 103 is provided with a shielding tube 1031, and the shielding tube 1031 is connected to the infusion needle positioning hole 1032. After the infusion is completed, the infusion needle can be inserted into the infusion needle positioning hole 1032, and the needle head of the infusion needle can be inserted on the positioning film to fix the infusion needle in the infusion needle positioning hole 1032 for temporary storage. The provision of the shielding tube 1031 can not only extend the length of the infusion needle positioning hole 1032 to avoid the problem of accidental exposure of the needle head of the infusion needle, but also allow the needle cap of the infusion needle to be inserted and positioned. That is, during the infusion stage, the needle cap of the infusion needle can be sleeved on the shielding tube 1031.

[0046] In order to further facilitate the deformation of the positioning piece 9, a plurality of notches 92 are provided on the positioning piece 9 to facilitate deformation, so as to improve the softness of the deformed part of the positioning piece 9.

[0047] The puncture device positioning part 93 is a positioning plug that can be inserted into the positioning groove 4 of the puncture device, that is, the puncture device has a positioning groove 4 for the positioning plug to be inserted. The number of the positioning plugs is one or two, and when used specifically, it can be selected according to actual needs.

[0048] When in use, hold the left clamping plate 102 and the right clamping plate 103, bring them close to each other, and at the same time, the notch of the clamping groove 101 can be opened, and then the clamping groove 101 is clamped into the bottleneck of the infusion bottle, loosen the left clamping plate 102 and the right clamping plate 103, and the clamping groove 101 deforms and recovers by itself, that is, the notch of the clamping groove 101 is deformed and reduced, so that the clamping groove 101 is clamped on the bottleneck of the infusion bottle, and the positioning piece 9 is fixed to the positioning groove of the puncture device through the positioning plug. Therefore, the puncture device can be stably positioned on the infusion bottle plug through the present invention, avoiding the problem of the puncture device accidentally detaching from the infusion bottle plug, thereby improving the safety of infusion;

[0049] The left clamp plate 102 and the right clamp plate 103 can be used to hang or wrap the infusion tube in the infusion set, avoiding the problem of dragging on the ground due to the infusion tube being too long; before infusion, the infusion needle of the infusion set can be placed on the infusion needle placement groove 1021 to avoid the problem of the infusion needle dragging on the ground or piercing people; after infusion, the infusion needle can be positioned in the infusion needle positioning hole 1032, which can ensure the storage of the infusion needle and avoid the problem of accidental piercing of people by the infusion needle, which significantly facilitates medical staff to take the infusion bottle and the infusion set.

[0050] During the above process, the left chuck plate 102 and the right chuck plate 103 can not only facilitate the opening of the notch of the clamping groove 101, but also facilitate the placement and positioning of various parts of the infusion set, significantly improving the convenience of operation and taking by medical staff.

[0051] Unless otherwise specified, in the present invention, if there are terms such as "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only for illustrative purposes and should not be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood by combining the drawings and according to specific circumstances.

[0052] Unless otherwise clearly defined and limited, in the present invention, if there are terms such as "set", "connected" and "connected", they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art of this technology, several improvements and refinements made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A non-residue filtering infusion puncture device, characterized by: It includes a first shell and a second shell which cover each other and form a grip portion; The gripping portion has a filter chamber in it, and the filter chamber is provided with a filter membrane for dividing the filter chamber into a liquid inlet chamber and a liquid outlet chamber; The side surface of the first shell is provided with an anti-drop positioning portion and an air inlet hole, and the upper side surface of the first shell is provided with a puncture portion, wherein the puncture portion has a liquid outlet channel communicated with the liquid inlet chamber and an air inlet channel communicated with the air inlet hole, and the liquid inlet of the liquid outlet channel is arranged obliquely, and when the infusion bottle plug is inserted, the liquid inlet of the liquid outlet channel can be supplied with the lowest liquid level in the infusion bottle; The lower side of the second shell is provided with a liquid outlet pipe, and the liquid outlet pipe is provided with a liquid outlet hole communicated with the liquid outlet chamber; The first shell and the second shell have a first groove and a second groove respectively, the groove wall of the first groove is engaged in the groove wall of the second groove, the edge position of the filter membrane is engaged between the groove wall of the first groove and the groove wall of the second groove to form a fixation, the depth of the second groove gradually increases from top to bottom, and a supporting protrusion is arranged in the second groove, and the supporting protrusion supports the middle part of the filter membrane.

2. The residue-free filtering infusion puncture device according to claim 1, characterized in that: A thickened area for arranging the anti-dropping positioning portion and the air inlet hole is arranged on the side surface of the first shell, and a step is formed between the thickened area and the side surface of the first shell.

3. The residue-free filtering infusion puncture device according to claim 2, characterized in that: The gripping portion is a flat cubic structure.

4. The residue-free filtering infusion puncture device according to claim 1, characterized in that: The anti-drop positioning portion is a positioning groove.

5. The residue-free filtering infusion puncture device according to claim 1, characterized in that: The first shell and the second shell are made of the same material.

6. The residue-free filtering infusion puncture device according to claim 1, characterized in that: A threaded connection section is provided at the lower end of the liquid outlet pipe.

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