WO2021000256A1 - Aqueous humor collection device - Google Patents
Aqueous humor collection device Download PDFInfo
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- WO2021000256A1 WO2021000256A1 PCT/CN2019/094384 CN2019094384W WO2021000256A1 WO 2021000256 A1 WO2021000256 A1 WO 2021000256A1 CN 2019094384 W CN2019094384 W CN 2019094384W WO 2021000256 A1 WO2021000256 A1 WO 2021000256A1
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- Prior art keywords
- tube
- aqueous humor
- peripheral wall
- outer cylinder
- collection device
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
Definitions
- the invention relates to the technical field of medical appliances, in particular to an aqueous humor collection device.
- Anterior chamber puncture of the eye is a medical technology that pierces the cornea of the eye to make the aqueous humor flow out. It has important application value in ophthalmology clinical research work. It is mainly used to reduce intraocular pressure, aqueous humor collection and other therapeutic pretreatments. Room discharge.
- the present invention provides an aqueous humor collection device that can control the drainage speed of aqueous humor during the puncture process, and can avoid contamination of the aqueous humor after collection and waste due to transfer , In order to improve safety, reliability and detection accuracy.
- an aqueous humor collection device which includes:
- the outer cylinder is provided with a puncture needle installation end and a liquid collection tube installation end;
- the liquid sampling tube assembly is pluggable and movably inserted from the installation end of the liquid sampling tube into the barrel cavity of the outer cylinder and includes a liquid sampling tube and a liquid sampling tube for sealing in the barrel cavity of the outer cylinder
- the pipe plug of the nozzle is pluggable and movably inserted from the installation end of the liquid sampling tube into the barrel cavity of the outer cylinder and includes a liquid sampling tube and a liquid sampling tube for sealing in the barrel cavity of the outer cylinder.
- a ventilation structure is formed between the liquid sampling tube assembly and the inner peripheral wall of the outer cylinder, and the ventilation structure communicates with the cylinder cavity area of the outer cylinder cavity between the inner end of the puncture needle and the tube plug,
- the aqueous humor collection device further includes a limiting buffer structure for limiting the displacement of the sampling tube assembly in the radial direction and for forming contact damping between the sampling tube assembly and the inner peripheral wall of the outer cylinder.
- the limiting buffer structure includes a limiting protrusion protruding from the outer peripheral wall of the sampling tube assembly or from the inner peripheral wall of the outer cylinder, and the radial ends of the limiting protrusion are respectively connected to the The outer peripheral wall of the liquid sampling tube assembly and the inner peripheral wall of the outer cylinder.
- the limiting buffer structure includes the limiting protrusions arranged at intervals along the tube length direction of the sampling tube assembly or continuously extending along the tube length direction, and the limiting protrusions are arranged along the length of the tube.
- the total span of the tube length direction is not less than half of the length of the liquid sampling tube.
- the limiting protrusion is integrally formed on the outer peripheral wall of the liquid sampling tube; or, the liquid sampling tube assembly includes a tube set sheathed on the outer peripheral wall of the liquid sampling tube, and the limiting protrusion The position protrusion is arranged on the outer peripheral wall of the tube set.
- the tube set is an elastic tube set.
- the limiting and buffering structure includes a plurality of limiting protrusions arranged at intervals in a circumferential direction, and gaps between the plurality of limiting protrusions are formed as the ventilation structure;
- the limiting buffer structure includes the limiting protrusion formed continuously extending in the circumferential direction, between the limiting protrusion and the outer peripheral wall of the liquid sampling tube assembly or between the limiting protrusion and the A vent gap as the ventilation structure is formed between the inner peripheral wall of the outer cylinder.
- a plurality of the limiting protrusions arranged at intervals along the circumferential direction are all convex points.
- the limiting protrusion formed continuously extending in the circumferential direction is in a corrugated shape or an oblique tooth shape.
- the liquid sampling tube assembly further includes a supporting tube frame for fixing the liquid sampling tube, and the limiting buffer structure is formed between the outer peripheral wall of the supporting tube frame and the inner peripheral wall of the outer cylinder .
- liquid sampling tube and the supporting tube frame are fixed by screw connection or snap connection.
- the aqueous humor collection device since the aqueous humor collection device is provided with a limit buffer structure, it can limit its displacement in the radial direction during the process of plugging and unplugging the liquid sampling tube assembly, that is, to ensure that the liquid sampling tube assembly only moves in the axial direction and can A certain movement damping is generated to prevent the insertion and extraction speed from being too fast, so it can not only ensure that the inner end of the puncture needle accurately pierces the tube plug to be inserted into the lumen of the liquid collection tube, but also ensures that it can be pulled out stably after the aqueous humor is collected Liquid collection tube assembly to avoid leakage of aqueous humor in the lumen and greatly improve reliability.
- the liquid sampling tube assembly is provided with a tube plug so that the lumen of the liquid sampling tube is in a negative pressure state.
- the puncture needle pierces the tube plug to drain the aqueous humor into the liquid sampling tube lumen, it follows The amount of fluid gradually increases, and the difference between the pressure in the lumen and the pressure in the anterior chamber gradually decreases, so the drainage speed of aqueous humor is gradually reduced, thereby avoiding the dangerous situation of sudden drop in intraocular pressure and greatly improving safety.
- the liquid sampling tube assembly can be pulled out from the outer cylinder cavity as a whole, and the aqueous humor in the liquid sampling tube can be detected directly, no further transfer is required, so it can avoid the The aqueous humor contacts the external environment to ensure the purity of the collected aqueous humor, thereby improving the accuracy of subsequent testing.
- Figure 1 is a perspective view of an aqueous humor collection device in a specific embodiment of the present invention
- Figure 2 is a front view of the aqueous humor collection device in Figure 1;
- FIG. 3 is a main cross-sectional view of the aqueous humor collection device in FIG. 2 when the puncture needle does not pierce the tube plug;
- Figure 4 is a main cross-sectional view of the aqueous humor collection device in Figure 3 when a puncture-proof partition is provided;
- Figure 5 is a cross-sectional view of the aqueous humor collection device in Figure 1;
- Fig. 6 is a schematic structural diagram of the puncture needle of the aqueous humor collection device in Fig. 3 when a peripheral wall water outlet hole is provided;
- Fig. 7 is a schematic structural view of the pipe plug of the aqueous humor collection device in Fig. 3 provided with an open peripheral wall and semicircular pipe plug exhaust channel;
- Fig. 8 is a schematic structural view of the pipe plug of the aqueous humor collection device in Fig. 3 provided with an open peripheral wall and a semi-rectangular pipe plug exhaust channel;
- Fig. 9 is a schematic structural diagram of the pipe plug of the aqueous humor collection device in Fig. 3 when a peripheral wall closed and circular pipe plug exhaust channel is provided;
- Fig. 10 is a schematic structural diagram of the pipe plug of the aqueous humor collection device in Fig. 3 when a peripheral wall closed and arc-shaped pipe plug exhaust channel is provided;
- FIG. 11 is a schematic structural diagram of the liquid collection tube and the supporting tube frame of the aqueous humor collection device in FIG. 3 when connected by a buckle;
- FIG. 12 is a schematic structural diagram of the liquid collection tube of the aqueous humor collection device in the specific embodiment of the present invention when a convex point-like limiting protrusion is integrally formed;
- FIG. 13 is a schematic diagram of the structure of the liquid collection tube of the aqueous humor collection device in the specific embodiment of the present invention when a corrugated limiting protrusion is integrally formed;
- FIG. 14 is a schematic structural view of the liquid collection tube of the aqueous humor collection device in the specific embodiment of the present invention when the tube kit is sheathed and the limiting protrusion is in the shape of a convex point;
- 15 is a schematic structural diagram of the liquid collection tube of the aqueous humor collection device in the specific embodiment of the present invention when the tube kit is sheathed and the limiting protrusion is corrugated;
- FIG. 16 is a schematic structural view of the liquid collection tube of the aqueous humor collection device in the specific embodiment of the present invention when the tube kit is sheathed and the limiting protrusion is in the shape of a helical tooth;
- FIG. 17 is a schematic structural diagram of the supporting pipe frame of the aqueous humor collection device in the specific embodiment of the present invention when a convex point-like limiting protrusion is integrally formed;
- FIG. 18 is a schematic structural diagram of the supporting pipe frame of the aqueous humor collection device in the specific embodiment of the present invention when a corrugated limiting protrusion is integrally formed;
- FIG. 19 is a schematic diagram of the structure of the supporting tube frame of the aqueous humor collection device in the specific embodiment of the present invention when the oblique tooth-shaped limiting protrusion is integrally formed;
- 20 is a schematic structural diagram of the supporting tube frame of the aqueous humor collection device in the specific embodiment of the present invention when the tube kit is sheathed and the limiting protrusion is in the shape of a convex point;
- 21 is a schematic structural diagram of the supporting tube frame of the aqueous humor collection device in the specific embodiment of the present invention when the tube kit is sheathed and the limiting protrusion is corrugated;
- FIG. 22 is a schematic diagram of the structure of the supporting tube frame of the aqueous humor collection device in the specific embodiment of the present invention when the tube kit is sheathed and the limiting protrusion is in the shape of an oblique tooth.
- an exemplary embodiment of the present invention provides an aqueous humor collection device 100, which includes an outer cylinder 1, a puncture needle 2, and a collection tube assembly 3.
- the outer cylinder 1 is provided with a puncture needle installation end and a liquid sampling tube installation end at both ends in the axial direction.
- the puncture needle 2 is fixedly installed at the installation end of the puncture needle and is provided with an inner end of the puncture needle located in the cavity of the outer cylinder and an outer end of the puncture needle located outside the cavity of the outer cylinder.
- the sampling tube assembly 3 includes a sampling tube 31 that is inserted from the installation end of the sampling tube into the barrel cavity of the outer cylinder and can be inserted and removed in the axial direction, and is arranged in the outer cylinder cavity for sealing the nozzle of the sampling tube.
- the pipe plug 33 the static friction coefficient between the tube plug 33 and the inner peripheral wall of the outer cylinder is ⁇ 1, and the static friction coefficient between the tube plug 33 and the nozzle of the liquid collection tube is ⁇ 2, and satisfies: ⁇ 1 ⁇ 2.
- the pipe plug 33 may be spaced apart from the inner peripheral wall of the outer cylinder to ensure that the pipe plug 33 and the inner peripheral wall of the outer cylinder do not contact each other.
- the fluid collection tube assembly 3 can be moved toward the inner end of the puncture needle, so that the inner end of the puncture needle pierces the soft sleeve 8 and the tube plug 33 Then, it is inserted into the lumen of the liquid collection tube to drain the aqueous humor in the anterior chamber to the lumen of the liquid collection tube through the outer end of the puncture needle and the inner end of the puncture needle.
- the lumen of the liquid sampling tube is always in a negative pressure state, but as the amount of liquid in the lumen gradually increases, the pressure in the lumen and the pressure in the anterior chamber The difference is gradually reduced, so the drainage speed of aqueous humor will gradually decrease, so as to avoid the dangerous situation of sudden drop in intraocular pressure, and greatly improve the safety of puncture drainage.
- the sampling tube assembly 3 can be pulled out from the outer cylinder cavity as a whole, and then the sampling tube 31 can be directly placed in a specific detection instrument for specific item detection, which is consistent with the prior art
- the aqueous humor in the lumen of the liquid collection tube can be prevented from contacting the external environment, and the purity of the collected aqueous humor can be ensured, thereby improving the accuracy and reliability of subsequent testing It can avoid the waste caused by transferring aqueous humor.
- the static friction coefficient ⁇ 1 between the pipe plug 33 and the inner peripheral wall of the outer cylinder is smaller than the static friction coefficient between the pipe plug 33 and the nozzle of the liquid sampling tube, which is ⁇ 2, or the pipe plug 33 is spaced from the inner peripheral wall of the outer cylinder
- the setting can ensure that when the liquid sampling tube assembly 3 is pulled out from the outer cylinder cavity as a whole, the tube plug 33 will always tightly block the liquid sampling tube nozzle, thereby more reliably ensuring the purity of the collected aqueous humor .
- the pipe plug 33 and the inner peripheral wall of the outer cylinder are preferably arranged in contact with each other through a smooth surface.
- the radially outer end surface of the pipe plug 33 or the inner peripheral wall surface of the outer cylinder can be set as a smooth surface, or the radial outer end surface of the pipe plug 33 and the inner peripheral wall surface of the outer cylinder can be set as smooth surfaces at the same time.
- the aqueous humor collection device 100 further includes an anti-sloshing structure for limiting the displacement of the sampling tube assembly 3 along the radial direction of the outer cylinder cavity, and an anti-sloshing structure for limiting the displacement between the sampling tube assembly 3 and the inner peripheral wall of the outer cylinder.
- a plug-in buffer structure with contact damping is formed between. The anti-sloshing structure can ensure that the liquid sampling tube assembly 3 only moves in the axial direction during the insertion and removal process without radial sloshing.
- the plugging buffer structure can prevent the plugging speed of the liquid sampling tube assembly 3 from being too fast, and can also improve the plugging stability of the liquid sampling tube assembly 3.
- the anti-sloshing structure may include an annular groove 35 formed on the outer peripheral wall of the liquid sampling tube assembly 3 and an annular stopper 37 provided in the hoop annular groove 35.
- the annular stopper 37 The radially outer end of 37 abuts against the inner peripheral wall of the outer cylinder. It should be noted that, in addition to preventing the radial sloshing of the liquid sampling tube assembly 3, the annular stopper 37 can make the inner end of the puncture needle pierce the tube plug 33 more accurately and prevent deviation during the puncture process.
- the stability and reliability of the puncture drainage process are effectively improved.
- the liquid sampling tube assembly 3 can be prevented from being separated from the outer cylinder when the aqueous humor collection device 100 is taken, thereby improving the reliability of the product.
- multiple sets of annular grooves 35 and corresponding annular stoppers 37 can be provided to obtain better effects.
- the annular limiter 37 can be preferably set as an easy-to-obtain, inexpensive and good-quality rubber band or other elastic ring, and the annular limiter 37 made of elastic material and the inner peripheral wall of the outer cylinder The formation of elastic contact between them can avoid excessive friction and abrasion of the inner peripheral wall of the outer cylinder.
- a groove vent 36 penetrating along the axial direction of the outer cylinder cavity can be formed on the groove side wall of the annular groove 35, so that the outer cylinder cavity is between the pipe plug 33 and the puncture needle installation end.
- the area of the barrel cavity can be communicated with the atmosphere through the groove vent 36, so as to avoid the formation of an air plug in the barrel cavity of the outer cylinder and affect the smooth plugging and unplugging of the liquid collection tube assembly 3, thereby improving the reliability of the use of the aqueous humor collection device 100 Sex.
- the anti-sloshing structure may also include a limiting protrusion 6 protruding from the outer peripheral wall of the liquid sampling tube assembly 3 or from the inner peripheral wall of the outer cylinder, and radial ends of the limiting protrusion 6
- the outer circumferential wall of the liquid sampling tube assembly 3 and the inner circumferential wall of the outer cylinder are respectively connected to prevent the liquid sampling tube assembly 3 from sloshing radially.
- the limiting protrusion 6 also has the function of a plug-in buffer structure, that is, the limiting protrusion 6 is formed as a limiting buffer structure with a simplified structure.
- the limiting protrusion 6 When the limiting protrusion 6 is provided on the outer peripheral wall of the liquid sampling tube assembly 3, the limiting protrusion 6 can be integrally formed on the outer peripheral wall of the liquid sampling tube 31.
- a tube set 34 sheathed on the outer peripheral wall of the liquid sampling tube 31 can be provided in the sampling tube assembly 3, and the limiting protrusion 6 can be provided on the outer peripheral wall of the tube set 34, because the tube set 34 is detachable Therefore, it can be reused, and it is relatively less difficult to form the limiting protrusion 6 on the tube sleeve 34, which is more conducive to reducing production costs.
- the tube set 34 can be set as an elastic tube set to prevent the liquid sampling tube 31 from rupturing due to rigid contact when subjected to a radial restriction, thereby reducing the risk of aqueous humor leakage.
- the anti-sloshing structure may include a plurality of limiting protrusions 6 arranged at intervals in the circumferential direction to ensure that the liquid sampling tube 31 is coaxially arranged with the outer cylinder cavity, thereby ensuring that the liquid sampling tube 31 is arranged along the Axial smooth plug-in movement.
- a vent gap is formed between the plurality of spacing protrusions 6 spaced apart, the barrel cavity of the outer cylinder body between the puncture needle installation end and the pipe plug 33 can communicate with the atmosphere through the vent gap , Thereby avoiding the formation of a gas plug in the cavity of the outer cylinder and affecting the smooth insertion and removal of the liquid sampling tube assembly 3.
- a plurality of limiting protrusions 6 arranged at intervals along the circumferential direction may be arranged in a convex point shape.
- the limiting protrusion 6 may also be continuously extended in the circumferential direction.
- an exhaust gap is preferably formed between the limiting protrusion 6 and the outer peripheral wall of the liquid sampling tube assembly 3 to avoid the formation of a gas plug.
- an exhaust gap is also preferably formed between the limiting protrusion 6 and the inner peripheral wall of the outer cylinder.
- the limiting protrusions 6 continuously extending in the circumferential direction may be arranged in a corrugated shape or a helical tooth shape.
- a ventilation structure can be formed in the limit buffer structure at the same time, so as to further simplify the structure of the aqueous humor collection device 100.
- the limiting protrusions 6 are arranged at intervals along the tube length direction of the liquid sampling tube assembly 3, or are continuously extended and formed along the tube length direction, it is preferable to limit the protrusions 6
- the total span of the position protrusion 6 along the length of the tube is set to be not less than half of the length of the liquid sampling tube. In other words, when the number of limiting protrusions 6 arranged along the length of the tube is large enough, the formation of a lever fulcrum on the outer peripheral wall of the sampling tube assembly 3 can be avoided, thereby more reliably preventing the sampling tube assembly 3 from shaking in the radial direction. .
- the liquid sampling tube assembly 3 further includes a supporting tube frame 32 for fixing the liquid sampling tube 31.
- the anti-sloshing structure can be arranged between the outer peripheral wall of the support pipe frame 32 and the inner peripheral wall of the outer cylinder, for example, as shown in FIGS. 17 to 22.
- the supporting tube frame 32 can better improve the stability of the liquid sampling tube assembly 3 and reduce the risk of the liquid sampling tube assembly 3 being broken due to collision or pressing.
- the connection method between the liquid sampling tube 31 and the support tube frame 32 must meet the requirements of stability and quick disassembly.
- the liquid sampling tube 31 and the support tube frame 32 can be fixed by screw connection or snap connection.
- the sampling tube 31 and the supporting tube frame 32 are connected by a snap.
- the sampling tube 31 needs to be inserted into the supporting tube frame 32, the sampling tube 31 is pushed to the right until the tube The rack buckle 321 is clamped into the liquid collection tube clamping groove 311, so that the liquid collection tube 31 and the supporting tube rack 32 can be locked and locked with each other.
- the tube rack buckle button 322 can be pressed to lift the tube rack buckle 321 to escape the liquid sampling tube clamping groove 311, and the liquid sampling tube 31 can be quickly taken out from the supporting tube rack 32.
- the aqueous humor collection device 100 further includes a needle holder 4 for fixing the puncture needle 2.
- the outer end of the puncture needle protrudes from the outer end of the needle holder and the inner end of the puncture needle protrudes from the inner end of the needle holder, and a quick plug-in connection is formed between the inner end of the needle holder and the installation end of the puncture needle, which helps reduce the difficulty of installation. Thereby improving assembly efficiency.
- a threaded connection or a snap-fit connection can be formed between the inner end of the needle holder and the puncture needle installation end.
- the aqueous humor collection device 100 further includes an anti-puncture spacer 5, which is used to isolate the inner end of the puncture needle and the tube plug 33 from each other along the axial direction of the outer cylinder cavity. This prevents the inner end of the puncture needle from piercing the tube plug 33 when the aqueous humor collection device 100 is not used for anterior chamber puncture, which effectively prevents the device from failing before being used.
- the puncture-proof partition 5 can prevent the aqueous humor collection device 100 from failing.
- the anti-puncture spacer 5 is set as a detachable piece, and the anti-puncture spacer 5 can be removed before the puncture.
- a spacer inserting groove 11 can be provided on the peripheral wall of the outer cylinder 1, and the spacer inserting groove 11 and the outer cylinder cavity are in the cylindrical cavity between the inner end of the puncture needle and the pipe plug 33.
- the areas communicate with each other, and the anti-puncture spacer 5 can be inserted into the barrel cavity area through the spacer insertion slot 11, and placed between the inner end of the puncture needle and the tube plug 33, thereby connecting the inner end of the puncture needle and the tube plug 33 33 are isolated from each other.
- the puncture-proof spacer 5 needs to be removed, it can be quickly pulled out from the spacer insertion slot 11, which is quite convenient for operation.
- the tube plug 33 in order to better avoid the formation of a gas plug in the cavity of the outer cylinder and affecting the smooth insertion and removal of the liquid sampling tube assembly 3, the tube plug 33 can be placed radially outward
- the rim forms a pipe plug exhaust passage 331 arranged along the extension direction of the outer barrel cavity, and the barrel cavity area of the outer barrel cavity between the pipe plug 33 and the puncture needle installation end can pass through the pipe plug exhaust passage 331
- the peripheral wall exhaust gap between the above-mentioned liquid sampling tube 31 and the inner peripheral wall of the outer cylinder communicates with the atmosphere.
- the barrel cavity of the outer cylinder is in the barrel cavity area between the pipe plug 33 and the puncture needle mounting end, the pipe plug exhaust passage 331 and the peripheral wall exhaust gap are in sequence connected, and the atmospheric environment is connected in sequence.
- a plurality of pipe plug exhaust passages 331 that extend along the axial direction of the outer cylinder cavity and are sequentially spaced along the circumferential direction of the pipe plug 33 are provided.
- the specific shape of the pipe plug exhaust passage 331 may be determined according to actual needs.
- a pipe plug exhaust groove serving as the pipe plug exhaust passage 331 may be formed on the outer peripheral wall of the pipe plug 33
- the exhaust groove of the pipe plug is provided with a groove opening facing the radially outer side.
- the plug exhaust passage 331 may be set as an exhaust passage with an open peripheral wall.
- the peripheral wall of the pipe plug exhaust channel 331 can be set as a closed peripheral wall, that is, the pipe plug exhaust channel 331 can be set as a peripheral wall closed exhaust channel.
- the cross-section of the pipe plug exhaust passage 331 can be set to have different shapes such as a semicircle, a square or an arc.
- the pipe plug 33 includes a pipe plug center portion for sealing the nozzle of the liquid extraction pipe and an outer ring portion of the pipe plug located radially outside the pipe plug center portion and provided with a pipe plug exhaust channel 331, which is To ensure internal and external ventilation, the outer ring portion of the pipe plug can be at least partially set as a loose ventilation structure, but it is still necessary to ensure that the central portion of the pipe plug has a tightness.
- a puncture guide hole 332 for guiding the inner end of the puncture needle can be provided at the end of the tube plug 33.
- the outer contour shape of the inner end of the puncture needle and the shape of the blind guide hole 332 are matched with each other.
- the inner end of the puncture needle and the puncture blind guide hole 332 may be set in a long tapered shape that matches with each other.
- the peripheral wall water outlet hole 21 communicating with the needle cavity of the puncture needle 2 can be provided on the outer peripheral wall of the inner end of the puncture needle.
- the axial distance between the peripheral wall outlet hole 21 and the axial outlet hole 22 should not be too large, otherwise when the axial outlet hole 22 is inserted into the lumen of the liquid sampling tube, the peripheral wall outlet hole 21 is still located in the pipe plug 33 and is blocked. As a result, the water outlet hole 21 of the peripheral wall loses its effectiveness.
- the axial distance between the hole center of the peripheral wall water outlet hole 21 and the hole center of the axial water outlet hole 22 can be preferably set to be no more than 3 mm to ensure that when the axial water outlet hole 22 is inserted into the lumen of the liquid collection tube, the peripheral wall
- the water outlet 21 can also be located in the lumen of the liquid sampling tube without being blocked.
- first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include at least one of the features. In the description of the present invention, "a plurality of” means at least two, such as two, three, etc., unless otherwise specifically defined.
- the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. , Or integrated; it can be mechanically connected, or it can be electrically connected or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction relationship between two components, Unless otherwise clearly defined.
- the specific meaning of the above-mentioned terms in the present invention can be understood according to specific circumstances.
- the first feature “on” or “under” the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. contact.
- the "above”, “above” and “above” of the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the level of the first feature is higher than the second feature.
- the “below”, “below” and “below” of the second feature of the first feature may mean that the first feature is directly below or obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
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Abstract
An aqueous humor collection device (100), comprising: an outer cylinder (1) provided with a puncture needle (2) mounting end and a liquid collecting pipe (31) mounting end; a puncture needle (2) inserted in the puncture needle (2) mounting end and comprising a puncture needle (2) outer end and a puncture needle (2) inner end; and a liquid collecting pipe assembly (3) pluggably and movably inserted in an outer cylinder (1) cavity and comprising a liquid collecting pipe (31) and a pipe stopper (33), wherein a ventilation structure is formed between the liquid collecting pipe assembly (3) and the inner peripheral wall of the outer cylinder (1), and can be communicated with a cylinder cavity area, between the puncture needle (2) inner end and the pipe stopper (33), of the outer cylinder (1) cavity. The aqueous humor collection device (100) also comprises a limiting buffer structure used for limiting radial displacement of the liquid collecting pipe assembly (3) and forming contact damping between the liquid collecting pipe assembly (3) and the inner peripheral wall of the outer cylinder (1). The aqueous humor collection device (100) can control the drainage speed of aqueous humor during puncture, avoid the contamination of the aqueous humor after collection is completed and the waste caused by transfer of the aqueous humor, and can ensure the insertion and pulling stability of the liquid collecting pipe assembly (3), thereby facilitating improving the safety, reliability and detection accuracy.
Description
本发明涉及医疗器具技术领域,具体地,涉及一种房水采集装置。The invention relates to the technical field of medical appliances, in particular to an aqueous humor collection device.
眼球前房穿刺术是一种通过器械刺穿眼球角膜以使房水流出的医疗技术,在眼科临床科研工作中有重要的应用价值,主要应用于降低眼压、房水采集和其他治疗性前房放液。Anterior chamber puncture of the eye is a medical technology that pierces the cornea of the eye to make the aqueous humor flow out. It has important application value in ophthalmology clinical research work. It is mainly used to reduce intraocular pressure, aqueous humor collection and other therapeutic pretreatments. Room discharge.
就目前而言,前房穿刺术的实施并无统一的专用器械和耗材,在实际临床工作中多以1ml注射器针头作为前房穿刺针。但在采用该1ml注射器针头进行穿刺的过程中,房水的引流速度较难控制,当放液过快时,会引起眼压的快速下降,更严重时甚至会引起其他并发症。此外,由于在房水采集完毕后,要将注射器腔体内的房水进一步转移至微量离心管,因此在此过程中,会造成房水的浪费,以及存在由于房水在转移过程中与外界环境接触而受到污染的风险,从而导致检测结果存在偏差,可靠性较差。At present, there is no unified special equipment and consumables for the implementation of anterior chamber puncture. In actual clinical work, 1ml syringe needles are often used as anterior chamber puncture needles. But in the process of puncturing with the 1ml syringe needle, the drainage speed of aqueous humor is difficult to control. When the fluid is discharged too fast, it will cause a rapid drop in intraocular pressure, and even more serious complications may even cause other complications. In addition, since the aqueous humor in the syringe cavity is further transferred to the microcentrifuge tube after the aqueous humor is collected, the aqueous humor will be wasted during this process, and the aqueous humor will be affected by the external environment during the transfer process. Risk of contamination due to contact, resulting in deviations in test results and poor reliability.
由此可见,现阶段亟需研发出一种能够解决在前房穿刺过程中存在的安全性和可靠性差等问题的新型采集装置。It can be seen that there is an urgent need to develop a new collection device that can solve the problems of poor safety and reliability during the anterior chamber puncture.
发明内容Summary of the invention
针对现有技术的上述缺陷或不足,本发明提供了一种房水采集装置,能够在穿刺过程中控制房水的引流速度,并能够避免房水在采集完毕后受到污染以及由于转移而造成浪费,以此提高安全性、可靠性以及检测准确性。In view of the above-mentioned defects or deficiencies of the prior art, the present invention provides an aqueous humor collection device that can control the drainage speed of aqueous humor during the puncture process, and can avoid contamination of the aqueous humor after collection and waste due to transfer , In order to improve safety, reliability and detection accuracy.
为实现上述目的,本发明提供了一种房水采集装置,所述房水采集装置包括:In order to achieve the above objective, the present invention provides an aqueous humor collection device, which includes:
外筒体,设有穿刺针安装端和采液管安装端;The outer cylinder is provided with a puncture needle installation end and a liquid collection tube installation end;
穿刺针,插装在所述穿刺针安装端中且包括穿刺针外端和伸入至外筒体筒腔内的穿刺针内端;A puncture needle inserted in the puncture needle installation end and includes an outer end of the puncture needle and an inner end of the puncture needle that extends into the cavity of the outer cylinder;
采液管组件,可插拔移动地从所述采液管安装端插入至所述外筒体筒腔内且包括采液管和用于密封在所述外筒体筒腔内的采液管管口的管塞;The liquid sampling tube assembly is pluggable and movably inserted from the installation end of the liquid sampling tube into the barrel cavity of the outer cylinder and includes a liquid sampling tube and a liquid sampling tube for sealing in the barrel cavity of the outer cylinder The pipe plug of the nozzle;
其中,所述采液管组件与外筒体内周壁之间形成有通气结构,该通气结构连通所述外筒体筒腔在所述穿刺针内端与所述管塞之间的筒腔区域,所述房水采集装置还包括用于限位所述采液管组件沿径向位移且用于在所述采液管组件与所述外筒体内周壁之间形成接触阻尼的限位缓冲结构。Wherein, a ventilation structure is formed between the liquid sampling tube assembly and the inner peripheral wall of the outer cylinder, and the ventilation structure communicates with the cylinder cavity area of the outer cylinder cavity between the inner end of the puncture needle and the tube plug, The aqueous humor collection device further includes a limiting buffer structure for limiting the displacement of the sampling tube assembly in the radial direction and for forming contact damping between the sampling tube assembly and the inner peripheral wall of the outer cylinder.
可选地,所述限位缓冲结构包括从所述采液管组件的外周壁或从所述外筒体内周壁凸出的限位凸起,该限位凸起的径向两端分别连接所述采液管组件的外周壁和所述外筒体内周壁。Optionally, the limiting buffer structure includes a limiting protrusion protruding from the outer peripheral wall of the sampling tube assembly or from the inner peripheral wall of the outer cylinder, and the radial ends of the limiting protrusion are respectively connected to the The outer peripheral wall of the liquid sampling tube assembly and the inner peripheral wall of the outer cylinder.
可选地,所述限位缓冲结构包括沿所述采液管组件的管长方向依次间隔设置或者沿所述管长方向连续延伸的所述限位凸起,所述限位凸起沿所述管长方向的总跨度不小于采液管管长的一半。Optionally, the limiting buffer structure includes the limiting protrusions arranged at intervals along the tube length direction of the sampling tube assembly or continuously extending along the tube length direction, and the limiting protrusions are arranged along the length of the tube. The total span of the tube length direction is not less than half of the length of the liquid sampling tube.
可选地,所述限位凸起一体成型在所述采液管的外周壁上;或者,所述采液管组件包括外套 在所述采液管的外周壁上的管套件,所述限位凸起设置在所述管套件的外周壁上。Optionally, the limiting protrusion is integrally formed on the outer peripheral wall of the liquid sampling tube; or, the liquid sampling tube assembly includes a tube set sheathed on the outer peripheral wall of the liquid sampling tube, and the limiting protrusion The position protrusion is arranged on the outer peripheral wall of the tube set.
可选地,所述管套件为弹性管套件。Optionally, the tube set is an elastic tube set.
可选地,所述限位缓冲结构包括沿周向依次间隔排布的多个所述限位凸起,多个所述限位凸起之间的间隙形成为所述通气结构;Optionally, the limiting and buffering structure includes a plurality of limiting protrusions arranged at intervals in a circumferential direction, and gaps between the plurality of limiting protrusions are formed as the ventilation structure;
或者,所述限位缓冲结构包括沿周向连续延伸成型的所述限位凸起,所述限位凸起与所述采液管组件的外周壁之间或所述限位凸起与所述外筒体内周壁之间形成有作为所述通气结构的排气间隙。Alternatively, the limiting buffer structure includes the limiting protrusion formed continuously extending in the circumferential direction, between the limiting protrusion and the outer peripheral wall of the liquid sampling tube assembly or between the limiting protrusion and the A vent gap as the ventilation structure is formed between the inner peripheral wall of the outer cylinder.
可选地,沿周向依次间隔排布的多个所述限位凸起均呈凸点状。Optionally, a plurality of the limiting protrusions arranged at intervals along the circumferential direction are all convex points.
可选地,沿周向连续延伸成型的所述限位凸起呈波纹状或斜齿状。Optionally, the limiting protrusion formed continuously extending in the circumferential direction is in a corrugated shape or an oblique tooth shape.
可选地,所述采液管组件还包括用于固定安装所述采液管的支撑管架,该支撑管架的外周壁与所述外筒体内周壁之间形成有所述限位缓冲结构。Optionally, the liquid sampling tube assembly further includes a supporting tube frame for fixing the liquid sampling tube, and the limiting buffer structure is formed between the outer peripheral wall of the supporting tube frame and the inner peripheral wall of the outer cylinder .
可选地,所述采液管与所述支撑管架之间通过螺接固定或卡扣连接固定。Optionally, the liquid sampling tube and the supporting tube frame are fixed by screw connection or snap connection.
在本发明中,由于房水采集装置设有限位缓冲结构,能够在插拔采液管组件的过程中限位其沿着径向位移,即保证采液管组件只沿轴向移动,且能够产生一定的移动阻尼以防止插拔速度过快,因此不仅能保证穿刺针内端精准地刺破管塞以插入至采液管管腔内,还能保证在房水采集完毕后稳定地拔出采液管组件,以避免管腔内的房水泄漏,大大提高可靠性。此外,采液管组件由于设有管塞而使得采液管管腔处于负压状态,当穿刺针内端刺破管塞以将房水引流至采液管管腔时,随着管腔中的液体量逐渐增多,管腔内压力与前房内压力之差逐渐缩小,因此使得房水的引流速度逐渐降低,从而避免出现眼压骤降的危险情况,大大提高安全性。再者,在采集完毕后,由于采液管组件能够从外筒体筒腔中整体拔出,并直接对采液管中的房水进行检测,无须作进一步转移,因此可避免管腔中的房水与外界环境接触,保证所采集的房水的纯净度,从而提高后续检测的准确性。In the present invention, since the aqueous humor collection device is provided with a limit buffer structure, it can limit its displacement in the radial direction during the process of plugging and unplugging the liquid sampling tube assembly, that is, to ensure that the liquid sampling tube assembly only moves in the axial direction and can A certain movement damping is generated to prevent the insertion and extraction speed from being too fast, so it can not only ensure that the inner end of the puncture needle accurately pierces the tube plug to be inserted into the lumen of the liquid collection tube, but also ensures that it can be pulled out stably after the aqueous humor is collected Liquid collection tube assembly to avoid leakage of aqueous humor in the lumen and greatly improve reliability. In addition, the liquid sampling tube assembly is provided with a tube plug so that the lumen of the liquid sampling tube is in a negative pressure state. When the inner end of the puncture needle pierces the tube plug to drain the aqueous humor into the liquid sampling tube lumen, it follows The amount of fluid gradually increases, and the difference between the pressure in the lumen and the pressure in the anterior chamber gradually decreases, so the drainage speed of aqueous humor is gradually reduced, thereby avoiding the dangerous situation of sudden drop in intraocular pressure and greatly improving safety. Furthermore, after the collection is completed, since the liquid sampling tube assembly can be pulled out from the outer cylinder cavity as a whole, and the aqueous humor in the liquid sampling tube can be detected directly, no further transfer is required, so it can avoid the The aqueous humor contacts the external environment to ensure the purity of the collected aqueous humor, thereby improving the accuracy of subsequent testing.
本发明的其它特征和优点将在随后的具体实施方式部分予以详细说明。Other features and advantages of the present invention will be described in detail in the following specific embodiments.
附图是用来提供对本发明的进一步理解,并且构成说明书的一部分,与下面的具体实施方式一起用于解释本发明,但并不构成对本发明的限制。在附图中:The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the attached picture:
图1为本发明的具体实施方式中的房水采集装置的立体图;Figure 1 is a perspective view of an aqueous humor collection device in a specific embodiment of the present invention;
图2为图1中的房水采集装置的主视图;Figure 2 is a front view of the aqueous humor collection device in Figure 1;
图3为图2中的房水采集装置在穿刺针未刺破管塞时的主剖视图;3 is a main cross-sectional view of the aqueous humor collection device in FIG. 2 when the puncture needle does not pierce the tube plug;
图4为图3中的房水采集装置设有防刺破隔离件时的主剖视图;Figure 4 is a main cross-sectional view of the aqueous humor collection device in Figure 3 when a puncture-proof partition is provided;
图5为图1中的房水采集装置的横截剖视图;Figure 5 is a cross-sectional view of the aqueous humor collection device in Figure 1;
图6为图3中的房水采集装置的穿刺针设有周壁出水孔时的结构示意图;Fig. 6 is a schematic structural diagram of the puncture needle of the aqueous humor collection device in Fig. 3 when a peripheral wall water outlet hole is provided;
图7为图3中的房水采集装置的管塞设有周壁开放式且呈半圆形的管塞排气通道时的结构示意图;Fig. 7 is a schematic structural view of the pipe plug of the aqueous humor collection device in Fig. 3 provided with an open peripheral wall and semicircular pipe plug exhaust channel;
图8为图3中的房水采集装置的管塞设有周壁开放式且呈半矩形的管塞排气通道时的结构示意图;Fig. 8 is a schematic structural view of the pipe plug of the aqueous humor collection device in Fig. 3 provided with an open peripheral wall and a semi-rectangular pipe plug exhaust channel;
图9为图3中的房水采集装置的管塞设有周壁封闭式且呈圆形的管塞排气通道时的结构示意图;Fig. 9 is a schematic structural diagram of the pipe plug of the aqueous humor collection device in Fig. 3 when a peripheral wall closed and circular pipe plug exhaust channel is provided;
图10为图3中的房水采集装置的管塞设有周壁封闭式且呈弧形的管塞排气通道时的结构示意图;Fig. 10 is a schematic structural diagram of the pipe plug of the aqueous humor collection device in Fig. 3 when a peripheral wall closed and arc-shaped pipe plug exhaust channel is provided;
图11为图3中的房水采集装置的采液管和支撑管架通过卡扣连接时的结构示意图;11 is a schematic structural diagram of the liquid collection tube and the supporting tube frame of the aqueous humor collection device in FIG. 3 when connected by a buckle;
图12为本发明的具体实施方式中的房水采集装置的采液管一体成型出凸点状的限位凸起时的结构示意图;12 is a schematic structural diagram of the liquid collection tube of the aqueous humor collection device in the specific embodiment of the present invention when a convex point-like limiting protrusion is integrally formed;
图13为本发明的具体实施方式中的房水采集装置的采液管一体成型出波纹状的限位凸起时的结构示意图;13 is a schematic diagram of the structure of the liquid collection tube of the aqueous humor collection device in the specific embodiment of the present invention when a corrugated limiting protrusion is integrally formed;
图14为本发明的具体实施方式中的房水采集装置的采液管外套有管套件且限位凸起呈凸点状时的结构示意图;14 is a schematic structural view of the liquid collection tube of the aqueous humor collection device in the specific embodiment of the present invention when the tube kit is sheathed and the limiting protrusion is in the shape of a convex point;
图15为本发明的具体实施方式中的房水采集装置的采液管外套有管套件且限位凸起呈波纹状时的结构示意图;15 is a schematic structural diagram of the liquid collection tube of the aqueous humor collection device in the specific embodiment of the present invention when the tube kit is sheathed and the limiting protrusion is corrugated;
图16为本发明的具体实施方式中的房水采集装置的采液管外套有管套件且限位凸起呈斜齿状时的结构示意图;16 is a schematic structural view of the liquid collection tube of the aqueous humor collection device in the specific embodiment of the present invention when the tube kit is sheathed and the limiting protrusion is in the shape of a helical tooth;
图17为本发明的具体实施方式中的房水采集装置的支撑管架一体成型出凸点状的限位凸起时的结构示意图;FIG. 17 is a schematic structural diagram of the supporting pipe frame of the aqueous humor collection device in the specific embodiment of the present invention when a convex point-like limiting protrusion is integrally formed;
图18为本发明的具体实施方式中的房水采集装置的支撑管架一体成型出波纹状的限位凸起时的结构示意图;18 is a schematic structural diagram of the supporting pipe frame of the aqueous humor collection device in the specific embodiment of the present invention when a corrugated limiting protrusion is integrally formed;
图19为本发明的具体实施方式中的房水采集装置的支撑管架一体成型出斜齿状的限位凸起时的结构示意图;19 is a schematic diagram of the structure of the supporting tube frame of the aqueous humor collection device in the specific embodiment of the present invention when the oblique tooth-shaped limiting protrusion is integrally formed;
图20为本发明的具体实施方式中的房水采集装置的支撑管架外套有管套件且限位凸起呈凸点状时的结构示意图;20 is a schematic structural diagram of the supporting tube frame of the aqueous humor collection device in the specific embodiment of the present invention when the tube kit is sheathed and the limiting protrusion is in the shape of a convex point;
图21为本发明的具体实施方式中的房水采集装置的支撑管架外套有管套件且限位凸起呈波纹状时的结构示意图;21 is a schematic structural diagram of the supporting tube frame of the aqueous humor collection device in the specific embodiment of the present invention when the tube kit is sheathed and the limiting protrusion is corrugated;
图22为本发明的具体实施方式中的房水采集装置的支撑管架外套有管套件且限位凸起呈斜齿状时的结构示意图。22 is a schematic diagram of the structure of the supporting tube frame of the aqueous humor collection device in the specific embodiment of the present invention when the tube kit is sheathed and the limiting protrusion is in the shape of an oblique tooth.
附图标记说明:Description of reference signs:
100 房水采集装置100 Aqueous Water Collection Device
1 外筒体 2 穿刺针1 Outer cylinder body 2 puncture needles
3 采液管组件 4 针座3 Liquid collection tube assembly 4 Needle holder
5 防刺破隔离件 6 限位凸起5 Anti-puncture spacers 6 6 Limiting protrusions
7 针帽 8 软套7 Needle caps 8 soft sleeves
11 隔离件插装槽 21 周壁出水孔11 Separator insertion slot 21 21 Water outlet hole on the wall
22 轴向出水孔 31 采液管22 Axial water outlet hole 31 Liquid sampling pipe
32 支撑管架 33 管塞32 Supporting pipe frame 33 Pipe plugging
34 管套件 35 环形凹槽34 Pipe kit 35 Annular groove
36 凹槽通气孔 37 环形限位件36 Groove vents 37 Ring limiters
311 采液管卡槽 321 管架卡扣311 Sampling pipe card slot 321 Pipe rack snap
322 管架卡扣按钮 331 管塞排气通道322 Pipe rack snap button 331 Pipe plug exhaust channel
332 刺破导盲孔332 Piercing the blind guide hole
以下结合附图对本发明的具体实施例进行详细说明。应当理解的是,此处所描述的具体实施例仅用于说明和解释本发明,并不用于限制本发明。The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, but not to limit the present invention.
下面参考附图描述根据本发明的房水采集装置。The aqueous humor collection device according to the present invention will be described below with reference to the drawings.
如图1至图16所示,本发明的示例性实施例提供了一种房水采集装置100,该房水采集装置100包括外筒体1、穿刺针2和采液管组件3。外筒体1设有位于轴向两端的穿刺针安装端和采液管安装端。穿刺针2固定安装于穿刺针安装端且设有位于外筒体筒腔内的穿刺针内端和位于外筒体筒腔外的穿刺针外端。采液管组件3包括从采液管安装端插入至外筒体筒腔内且能够沿轴向插拔移动的采液管31和设置在外筒体筒腔内以用于密封采液管管口的管塞33。其中,管塞33与外筒体内周壁之间的静摩擦系数为μ1,管塞33与采液管管口之间的静摩擦系数为μ2,且满足:μ1<μ2。或者,可将管塞33间隔于外筒体内周壁设置,以保证管塞33与外筒体内周壁互不接触。As shown in FIGS. 1 to 16, an exemplary embodiment of the present invention provides an aqueous humor collection device 100, which includes an outer cylinder 1, a puncture needle 2, and a collection tube assembly 3. The outer cylinder 1 is provided with a puncture needle installation end and a liquid sampling tube installation end at both ends in the axial direction. The puncture needle 2 is fixedly installed at the installation end of the puncture needle and is provided with an inner end of the puncture needle located in the cavity of the outer cylinder and an outer end of the puncture needle located outside the cavity of the outer cylinder. The sampling tube assembly 3 includes a sampling tube 31 that is inserted from the installation end of the sampling tube into the barrel cavity of the outer cylinder and can be inserted and removed in the axial direction, and is arranged in the outer cylinder cavity for sealing the nozzle of the sampling tube. The pipe plug 33. Among them, the static friction coefficient between the tube plug 33 and the inner peripheral wall of the outer cylinder is μ1, and the static friction coefficient between the tube plug 33 and the nozzle of the liquid collection tube is μ2, and satisfies: μ1<μ2. Alternatively, the pipe plug 33 may be spaced apart from the inner peripheral wall of the outer cylinder to ensure that the pipe plug 33 and the inner peripheral wall of the outer cylinder do not contact each other.
在采用本发明的示例性实施例中的房水采集装置100进行前房穿刺时,可将采液管组件3朝向穿刺针内端推移,使得穿刺针内端刺破软套8和管塞33后插入至采液管管腔中,以将前房中的房水通过穿刺针外端和穿刺针内端引流至采液管管腔。在此采集过程中,由于采液管管口被管塞33密封,采液管管腔始终处于负压状态,但随着管腔中的液体量逐渐增多,管腔内压力与前房内压力之差逐渐缩小,因此会使得房水的引流速度逐渐降低,从而避免出现眼压骤降的危险情况,大大提高穿刺引流的安全性。When the aqueous humor collection device 100 in the exemplary embodiment of the present invention is used for anterior chamber puncture, the fluid collection tube assembly 3 can be moved toward the inner end of the puncture needle, so that the inner end of the puncture needle pierces the soft sleeve 8 and the tube plug 33 Then, it is inserted into the lumen of the liquid collection tube to drain the aqueous humor in the anterior chamber to the lumen of the liquid collection tube through the outer end of the puncture needle and the inner end of the puncture needle. During this collection process, because the nozzle of the liquid sampling tube is sealed by the tube plug 33, the lumen of the liquid sampling tube is always in a negative pressure state, but as the amount of liquid in the lumen gradually increases, the pressure in the lumen and the pressure in the anterior chamber The difference is gradually reduced, so the drainage speed of aqueous humor will gradually decrease, so as to avoid the dangerous situation of sudden drop in intraocular pressure, and greatly improve the safety of puncture drainage.
进一步地,当房水采集完毕后,可将采液管组件3从外筒体筒腔中整体拔出,继而直接将采液管31放置于特定检测仪器中进行特定项目检测,与现有技术相比,无须对采集后的房水作进一步转移,因此可避免采液管管腔中的房水与外界环境接触,保证所采集的房水的纯净度,从而提高后续检测的准确性和可靠性,且能够避免由于转移房水所造成的浪费。Further, when the aqueous humor is collected, the sampling tube assembly 3 can be pulled out from the outer cylinder cavity as a whole, and then the sampling tube 31 can be directly placed in a specific detection instrument for specific item detection, which is consistent with the prior art In contrast, there is no need to further transfer the collected aqueous humor, so the aqueous humor in the lumen of the liquid collection tube can be prevented from contacting the external environment, and the purity of the collected aqueous humor can be ensured, thereby improving the accuracy and reliability of subsequent testing It can avoid the waste caused by transferring aqueous humor.
此外,由于限定了管塞33与外筒体内周壁之间的静摩擦系数μ1小于管塞33与所述采液管管口之间的静摩擦系数为μ2,或者将管塞33间隔于外筒体内周壁设置,可保证在将采液管组件3从 外筒体筒腔中整体拔出时,管塞33始终紧固地堵塞采液管管口,从而更可靠地保证所采集的房水的纯净度。In addition, because it is defined that the static friction coefficient μ1 between the pipe plug 33 and the inner peripheral wall of the outer cylinder is smaller than the static friction coefficient between the pipe plug 33 and the nozzle of the liquid sampling tube, which is μ2, or the pipe plug 33 is spaced from the inner peripheral wall of the outer cylinder The setting can ensure that when the liquid sampling tube assembly 3 is pulled out from the outer cylinder cavity as a whole, the tube plug 33 will always tightly block the liquid sampling tube nozzle, thereby more reliably ensuring the purity of the collected aqueous humor .
在一些实施例中,当管塞33与外筒体内周壁相互接触时,为更好地避免管塞33脱落,将管塞33与外筒体内周壁之间优选设置为通过光滑面接触。例如,可将管塞33的径向外端面或外筒体内周壁面设置为光滑面,或者同时将管塞33的径向外端面和外筒体内周壁面设置为光滑面。In some embodiments, when the pipe plug 33 and the inner peripheral wall of the outer cylinder are in contact with each other, in order to better prevent the pipe plug 33 from falling off, the pipe plug 33 and the inner peripheral wall of the outer cylinder are preferably arranged in contact with each other through a smooth surface. For example, the radially outer end surface of the pipe plug 33 or the inner peripheral wall surface of the outer cylinder can be set as a smooth surface, or the radial outer end surface of the pipe plug 33 and the inner peripheral wall surface of the outer cylinder can be set as smooth surfaces at the same time.
在一些实施例中,房水采集装置100还包括用于限位采液管组件3沿外筒体筒腔径向位移的防晃动结构和用于在采液管组件3与外筒体内周壁之间形成接触阻尼的插拔缓冲结构。防晃动结构可保证采液管组件3在插拔移动过程中只沿轴向移动而不会出现径向晃动,不仅能保证在穿刺过程中穿刺针内端精准地刺破管塞33以插入至采液管管腔内,还能保证在房水采集完毕后稳定地拔出采液管组件3,以避免采液管管腔内的房水泄漏,从而进一步提高后续检测的准确性和可靠性。插拔缓冲结构可防止采液管组件3插拔速度过快,也可提高采液管组件3的插拔稳定性。In some embodiments, the aqueous humor collection device 100 further includes an anti-sloshing structure for limiting the displacement of the sampling tube assembly 3 along the radial direction of the outer cylinder cavity, and an anti-sloshing structure for limiting the displacement between the sampling tube assembly 3 and the inner peripheral wall of the outer cylinder. A plug-in buffer structure with contact damping is formed between. The anti-sloshing structure can ensure that the liquid sampling tube assembly 3 only moves in the axial direction during the insertion and removal process without radial sloshing. It can not only ensure that the inner end of the puncture needle accurately pierces the tube plug 33 during the puncture process to insert it In the lumen of the liquid collection tube, it can be ensured that the liquid collection tube assembly 3 can be pulled out stably after the aqueous humor collection is completed, so as to avoid the leakage of aqueous humor in the liquid collection tube lumen, thereby further improving the accuracy and reliability of subsequent detection . The plugging buffer structure can prevent the plugging speed of the liquid sampling tube assembly 3 from being too fast, and can also improve the plugging stability of the liquid sampling tube assembly 3.
如图3和图4所示,防晃动结构可包括形成在采液管组件3的外周壁上的环形凹槽35和环箍环形凹槽35设置的环形限位件37,该环形限位件37的径向外端抵接外筒体内周壁。需要说明的是,环形限位件37除了能够防止采液管组件3的径向晃动以使得穿刺过程中穿刺针内端扎破管塞33时更为准确而防止偏位以外,还能适当地增大采液管组件3的插拔阻力,使操作人员能够感受到一定的推移手感,从而避免在将采液管组件3朝向穿刺针内端推移时由于推移速度过快而造成刺破不精准的情况,进而避免穿刺针内端不能插入至采液管管腔内,即有效提高穿刺引流过程的稳定性和可靠性。此外,还可防止在拿取房水采集装置100时采液管组件3与外筒体分离脱落,从而提高产品的可靠性。优选地,可设置多组环形凹槽35和对应的环形限位件37,以获得更好的效果。As shown in FIGS. 3 and 4, the anti-sloshing structure may include an annular groove 35 formed on the outer peripheral wall of the liquid sampling tube assembly 3 and an annular stopper 37 provided in the hoop annular groove 35. The annular stopper 37 The radially outer end of 37 abuts against the inner peripheral wall of the outer cylinder. It should be noted that, in addition to preventing the radial sloshing of the liquid sampling tube assembly 3, the annular stopper 37 can make the inner end of the puncture needle pierce the tube plug 33 more accurately and prevent deviation during the puncture process. Increase the plugging resistance of the sampling tube assembly 3, so that the operator can feel a certain pushing feel, so as to avoid the inaccurate puncture caused by the too fast moving speed when the sampling tube assembly 3 is pushed toward the inner end of the puncture needle In order to prevent the inner end of the puncture needle from being inserted into the lumen of the liquid collection tube, the stability and reliability of the puncture drainage process are effectively improved. In addition, the liquid sampling tube assembly 3 can be prevented from being separated from the outer cylinder when the aqueous humor collection device 100 is taken, thereby improving the reliability of the product. Preferably, multiple sets of annular grooves 35 and corresponding annular stoppers 37 can be provided to obtain better effects.
为降低生产难度和降低生产成本,可将环形限位件37优选设置为易于获取、低廉物美的橡皮圈或其他弹性圈,且该弹性材质制成的环形限位件37与外筒体内周壁之间形成弹性接触,可避免过度摩擦而磨损外筒体内周壁。In order to reduce production difficulty and cost, the annular limiter 37 can be preferably set as an easy-to-obtain, inexpensive and good-quality rubber band or other elastic ring, and the annular limiter 37 made of elastic material and the inner peripheral wall of the outer cylinder The formation of elastic contact between them can avoid excessive friction and abrasion of the inner peripheral wall of the outer cylinder.
进一步地,可在环形凹槽35的凹槽侧壁形成有沿外筒体筒腔的轴向贯通的凹槽通气孔36,使得外筒体筒腔在管塞33与穿刺针安装端之间的筒腔区域能够通过该凹槽通气孔36与大气环境连通,以避免在外筒体筒腔中形成气栓而影响采液管组件3的顺畅插拔,从而提高房水采集装置100的使用可靠性。Further, a groove vent 36 penetrating along the axial direction of the outer cylinder cavity can be formed on the groove side wall of the annular groove 35, so that the outer cylinder cavity is between the pipe plug 33 and the puncture needle installation end. The area of the barrel cavity can be communicated with the atmosphere through the groove vent 36, so as to avoid the formation of an air plug in the barrel cavity of the outer cylinder and affect the smooth plugging and unplugging of the liquid collection tube assembly 3, thereby improving the reliability of the use of the aqueous humor collection device 100 Sex.
如图12至图16所示,防晃动结构还可包括从采液管组件3的外周壁或从外筒体内周壁凸出的限位凸起6,该限位凸起6的径向两端分别连接采液管组件3的外周壁和外筒体内周壁,从而防止采液管组件3产生径向晃动。此外,该限位凸起6同样具有插拔缓冲结构的功能,即限位凸起6形成为结构简化的限位缓冲结构。As shown in Figures 12 to 16, the anti-sloshing structure may also include a limiting protrusion 6 protruding from the outer peripheral wall of the liquid sampling tube assembly 3 or from the inner peripheral wall of the outer cylinder, and radial ends of the limiting protrusion 6 The outer circumferential wall of the liquid sampling tube assembly 3 and the inner circumferential wall of the outer cylinder are respectively connected to prevent the liquid sampling tube assembly 3 from sloshing radially. In addition, the limiting protrusion 6 also has the function of a plug-in buffer structure, that is, the limiting protrusion 6 is formed as a limiting buffer structure with a simplified structure.
当限位凸起6设置在采液管组件3的外周壁时,可将限位凸起6一体成型在采液管31的外周壁上。或者,可在采液管组件3中设置外套于采液管31的外周壁上的管套件34,并将限位凸起6设置在管套件34的外周壁上,由于管套件34为可拆卸件,因此能够重复利用,且在管套件34上成型出限位凸起6的难度相对更小,更有利于降低生产成本。When the limiting protrusion 6 is provided on the outer peripheral wall of the liquid sampling tube assembly 3, the limiting protrusion 6 can be integrally formed on the outer peripheral wall of the liquid sampling tube 31. Alternatively, a tube set 34 sheathed on the outer peripheral wall of the liquid sampling tube 31 can be provided in the sampling tube assembly 3, and the limiting protrusion 6 can be provided on the outer peripheral wall of the tube set 34, because the tube set 34 is detachable Therefore, it can be reused, and it is relatively less difficult to form the limiting protrusion 6 on the tube sleeve 34, which is more conducive to reducing production costs.
进一步地,可将管套件34设置为弹性管套件,以防止采液管31在受到径向限位作用时由于刚性接触而破裂,从而减少房水泄漏的风险。Further, the tube set 34 can be set as an elastic tube set to prevent the liquid sampling tube 31 from rupturing due to rigid contact when subjected to a radial restriction, thereby reducing the risk of aqueous humor leakage.
在一些实施例中,防晃动结构可包括沿周向依次间隔排布的多个限位凸起6,可保证采液管31与外筒体筒腔同轴设置,从而保证采液管31沿轴向顺畅插拔移动。此外,由于相互间隔的多个限位凸起6之间形成有排气间隙,外筒体筒腔在穿刺针安装端与管塞33之间的筒腔区域可通过该排气间隙连通大气环境,从而避免在外筒体筒腔中形成气栓而影响采液管组件3的顺畅插拔。例如,参照图12和图14,沿周向依次间隔排布的多个限位凸起6可设置为呈凸点状。In some embodiments, the anti-sloshing structure may include a plurality of limiting protrusions 6 arranged at intervals in the circumferential direction to ensure that the liquid sampling tube 31 is coaxially arranged with the outer cylinder cavity, thereby ensuring that the liquid sampling tube 31 is arranged along the Axial smooth plug-in movement. In addition, since a vent gap is formed between the plurality of spacing protrusions 6 spaced apart, the barrel cavity of the outer cylinder body between the puncture needle installation end and the pipe plug 33 can communicate with the atmosphere through the vent gap , Thereby avoiding the formation of a gas plug in the cavity of the outer cylinder and affecting the smooth insertion and removal of the liquid sampling tube assembly 3. For example, referring to FIGS. 12 and 14, a plurality of limiting protrusions 6 arranged at intervals along the circumferential direction may be arranged in a convex point shape.
或者,在一些实施例中,限位凸起6也可沿周向连续延伸成型。当限位凸起6形成在外筒体内周壁时,限位凸起6与采液管组件3的外周壁之间优选地形成有排气间隙,以避免形成气栓。当限位凸起6形成在采液管组件3的外周壁时,限位凸起6与外筒体内周壁之间也优选地形成有排气间隙。例如,参照图13、图15和图16,沿周向连续延伸成型的限位凸起6可设置为呈波纹状或斜齿状。Alternatively, in some embodiments, the limiting protrusion 6 may also be continuously extended in the circumferential direction. When the limiting protrusion 6 is formed on the inner peripheral wall of the outer cylinder, an exhaust gap is preferably formed between the limiting protrusion 6 and the outer peripheral wall of the liquid sampling tube assembly 3 to avoid the formation of a gas plug. When the limiting protrusion 6 is formed on the outer peripheral wall of the liquid sampling tube assembly 3, an exhaust gap is also preferably formed between the limiting protrusion 6 and the inner peripheral wall of the outer cylinder. For example, referring to FIGS. 13, 15 and 16, the limiting protrusions 6 continuously extending in the circumferential direction may be arranged in a corrugated shape or a helical tooth shape.
由此可见,可同时在限位缓冲结构中形成通气结构,以进一步简化房水采集装置100的结构。It can be seen that a ventilation structure can be formed in the limit buffer structure at the same time, so as to further simplify the structure of the aqueous humor collection device 100.
为进一步提高采液管组件3的插拔稳定性,无论限位凸起6是沿采液管组件3的管长方向依次间隔设置,或者是沿管长方向连续延伸成型,均优选地将限位凸起6沿管长方向的总跨度设置为不小于采液管管长的一半。换言之,当限位凸起6在沿管长方向上的布置数量足够多时,可避免在采液管组件3的外周壁上形成杠杆支点,从而更可靠地防止采液管组件3沿径向晃动。In order to further improve the plugging and unplugging stability of the liquid sampling tube assembly 3, no matter whether the limiting protrusions 6 are arranged at intervals along the tube length direction of the liquid sampling tube assembly 3, or are continuously extended and formed along the tube length direction, it is preferable to limit the protrusions 6 The total span of the position protrusion 6 along the length of the tube is set to be not less than half of the length of the liquid sampling tube. In other words, when the number of limiting protrusions 6 arranged along the length of the tube is large enough, the formation of a lever fulcrum on the outer peripheral wall of the sampling tube assembly 3 can be avoided, thereby more reliably preventing the sampling tube assembly 3 from shaking in the radial direction. .
在一些实施例中,采液管组件3还包括用于固定安装采液管31的支撑管架32。在此结构下,可将防晃动结构设置在支撑管架32的外周壁与外筒体内周壁之间,例如可参照图17至图22所示。该支撑管架32能够更好地提高采液管组件3的稳定性以及能够降低采液管组件3由于受到碰撞或按压推移而破裂的风险。In some embodiments, the liquid sampling tube assembly 3 further includes a supporting tube frame 32 for fixing the liquid sampling tube 31. Under this structure, the anti-sloshing structure can be arranged between the outer peripheral wall of the support pipe frame 32 and the inner peripheral wall of the outer cylinder, for example, as shown in FIGS. 17 to 22. The supporting tube frame 32 can better improve the stability of the liquid sampling tube assembly 3 and reduce the risk of the liquid sampling tube assembly 3 being broken due to collision or pressing.
由于在房水采集完毕后,需要将采液管单独取出,因此采液管31与支撑管架32之间的连接方式要同时满足稳定性和快速拆装的要求。优选地,采液管31与支撑管架32之间可通过螺接固定或卡扣连接固定。Since the liquid sampling tube needs to be taken out separately after the aqueous humor is collected, the connection method between the liquid sampling tube 31 and the support tube frame 32 must meet the requirements of stability and quick disassembly. Preferably, the liquid sampling tube 31 and the support tube frame 32 can be fixed by screw connection or snap connection.
例如,参照图11,采液管31与支撑管架32之间通过卡扣连接,当需要将采液管31插装在支撑管架32中时,将采液管31向右推移,直至管架卡扣321卡入采液管卡槽311中,即可使得采液管31与支撑管架32相互卡扣锁止。当需要取出采液管31时,可按压管架卡扣按钮322,使得管架卡扣321抬升以脱离采液管卡槽311,即可将采液管31从支撑管架32中快速取出。For example, referring to FIG. 11, the sampling tube 31 and the supporting tube frame 32 are connected by a snap. When the sampling tube 31 needs to be inserted into the supporting tube frame 32, the sampling tube 31 is pushed to the right until the tube The rack buckle 321 is clamped into the liquid collection tube clamping groove 311, so that the liquid collection tube 31 and the supporting tube rack 32 can be locked and locked with each other. When the liquid sampling tube 31 needs to be taken out, the tube rack buckle button 322 can be pressed to lift the tube rack buckle 321 to escape the liquid sampling tube clamping groove 311, and the liquid sampling tube 31 can be quickly taken out from the supporting tube rack 32.
在一些实施例中,房水采集装置100还包括用于固定安装穿刺针2的针座4。其中,穿刺针外端从针座外端伸出且穿刺针内端从针座内端伸出,并且针座内端与穿刺针安装端之间形成快速插拔连接,有利于降低安装难度,从而提高装配效率。例如,针座内端与穿刺针安装端之间可形成螺纹插接或卡扣插接。In some embodiments, the aqueous humor collection device 100 further includes a needle holder 4 for fixing the puncture needle 2. Among them, the outer end of the puncture needle protrudes from the outer end of the needle holder and the inner end of the puncture needle protrudes from the inner end of the needle holder, and a quick plug-in connection is formed between the inner end of the needle holder and the installation end of the puncture needle, which helps reduce the difficulty of installation. Thereby improving assembly efficiency. For example, a threaded connection or a snap-fit connection can be formed between the inner end of the needle holder and the puncture needle installation end.
在一些实施例中,房水采集装置100还包括防刺破隔离件5,该防刺破隔离件5用于沿外筒体筒腔的轴向将穿刺针内端与管塞33相互隔离,以防止在未使用房水采集装置100进行前房穿刺的情 况下穿刺针内端刺破管塞33,即有效避免装置在未使用前失效。例如,在运输途中或医护人员误操作等情况下,该防刺破隔离件5可防止房水采集装置100失效。当然,为了不影响房水采集装置100的正常穿刺引流,将防刺破隔离件5设置为可拆卸件,在进行穿刺之前,即可将防刺破隔离件5拆除。In some embodiments, the aqueous humor collection device 100 further includes an anti-puncture spacer 5, which is used to isolate the inner end of the puncture needle and the tube plug 33 from each other along the axial direction of the outer cylinder cavity. This prevents the inner end of the puncture needle from piercing the tube plug 33 when the aqueous humor collection device 100 is not used for anterior chamber puncture, which effectively prevents the device from failing before being used. For example, in the case of transportation or misoperation by medical personnel, the puncture-proof partition 5 can prevent the aqueous humor collection device 100 from failing. Of course, in order not to affect the normal puncture and drainage of the aqueous humor collection device 100, the anti-puncture spacer 5 is set as a detachable piece, and the anti-puncture spacer 5 can be removed before the puncture.
例如,参照图4,可在外筒体1的周壁设置隔离件插装槽11,并使得该隔离件插装槽11与外筒体筒腔在穿刺针内端与管塞33之间的筒腔区域相互连通,防刺破隔离件5可通过该隔离件插装槽11插入至该筒腔区域内,并置于穿刺针内端与管塞33之间,从而将穿刺针内端与管塞33相互隔离。在需要拆除防刺破隔离件5时,可将其从隔离件插装槽11中快速拔出,操作相当方便。For example, referring to FIG. 4, a spacer inserting groove 11 can be provided on the peripheral wall of the outer cylinder 1, and the spacer inserting groove 11 and the outer cylinder cavity are in the cylindrical cavity between the inner end of the puncture needle and the pipe plug 33. The areas communicate with each other, and the anti-puncture spacer 5 can be inserted into the barrel cavity area through the spacer insertion slot 11, and placed between the inner end of the puncture needle and the tube plug 33, thereby connecting the inner end of the puncture needle and the tube plug 33 33 are isolated from each other. When the puncture-proof spacer 5 needs to be removed, it can be quickly pulled out from the spacer insertion slot 11, which is quite convenient for operation.
在一些实施例中,如图7至图10所示,为更好地避免在外筒体筒腔内形成气栓而影响采液管组件3的顺畅插拔,可在管塞33的径向外缘部形成沿外筒体筒腔的延伸方向设置的管塞排气通道331,外筒体筒腔在管塞33与穿刺针安装端之间的筒腔区域可通过该管塞排气通道331以及上述的采液管31与外筒体内周壁之间的周壁排气间隙连通大气环境。换言之,外筒体筒腔在管塞33与穿刺针安装端之间的筒腔区域、管塞排气通道331和周壁排气间隙依次连通以及大气环境依次连通。In some embodiments, as shown in Figures 7 to 10, in order to better avoid the formation of a gas plug in the cavity of the outer cylinder and affecting the smooth insertion and removal of the liquid sampling tube assembly 3, the tube plug 33 can be placed radially outward The rim forms a pipe plug exhaust passage 331 arranged along the extension direction of the outer barrel cavity, and the barrel cavity area of the outer barrel cavity between the pipe plug 33 and the puncture needle installation end can pass through the pipe plug exhaust passage 331 And the peripheral wall exhaust gap between the above-mentioned liquid sampling tube 31 and the inner peripheral wall of the outer cylinder communicates with the atmosphere. In other words, the barrel cavity of the outer cylinder is in the barrel cavity area between the pipe plug 33 and the puncture needle mounting end, the pipe plug exhaust passage 331 and the peripheral wall exhaust gap are in sequence connected, and the atmospheric environment is connected in sequence.
为提高通气效果以及使管塞33的结构更加均匀合理,设置沿外筒体筒腔的轴向延伸,并沿管塞33的周向依次间隔排布的多个管塞排气通道331。In order to improve the ventilation effect and make the structure of the pipe plug 33 more uniform and reasonable, a plurality of pipe plug exhaust passages 331 that extend along the axial direction of the outer cylinder cavity and are sequentially spaced along the circumferential direction of the pipe plug 33 are provided.
管塞排气通道331的具体形状可视实际需要而定,例如,参照图7和图8,可在管塞33的外周壁上形成有作为管塞排气通道331的管塞排气凹槽,该管塞排气凹槽设有朝向径向外侧的凹槽开口。换言之,可将管塞排气通道331设置为周壁开放式的排气通道。或者,参照图9和图10,可将管塞排气通道331的通道周壁设置为封闭周壁,即可将管塞排气通道331设置为周壁封闭式的排气通道。此外,管塞排气通道331的横截面可设置为呈半圆形、方形或弧形等不同形状。The specific shape of the pipe plug exhaust passage 331 may be determined according to actual needs. For example, referring to FIGS. 7 and 8, a pipe plug exhaust groove serving as the pipe plug exhaust passage 331 may be formed on the outer peripheral wall of the pipe plug 33 The exhaust groove of the pipe plug is provided with a groove opening facing the radially outer side. In other words, the plug exhaust passage 331 may be set as an exhaust passage with an open peripheral wall. Alternatively, referring to Figures 9 and 10, the peripheral wall of the pipe plug exhaust channel 331 can be set as a closed peripheral wall, that is, the pipe plug exhaust channel 331 can be set as a peripheral wall closed exhaust channel. In addition, the cross-section of the pipe plug exhaust passage 331 can be set to have different shapes such as a semicircle, a square or an arc.
在一些实施例中,管塞33包括用于密封采液管管口的管塞中心部和位于管塞中心部的径向外侧且设有管塞排气通道331的管塞外环部,为保证实现内外通气,可将管塞外环部至少部分设置为疏松通气结构,但依然需要保证管塞中心部具有密封性。In some embodiments, the pipe plug 33 includes a pipe plug center portion for sealing the nozzle of the liquid extraction pipe and an outer ring portion of the pipe plug located radially outside the pipe plug center portion and provided with a pipe plug exhaust channel 331, which is To ensure internal and external ventilation, the outer ring portion of the pipe plug can be at least partially set as a loose ventilation structure, but it is still necessary to ensure that the central portion of the pipe plug has a tightness.
为保证穿刺针内端在刺破管塞33时不会产生晃动而影响刺破精确性,可在管塞33的端部设置用于引导穿刺针内端穿入的刺破导盲孔332,并使得穿刺针内端的外轮廓形状与刺破导盲孔332的形状相互匹配。例如,参照图3,可将穿刺针内端和刺破导盲孔332设置为相互匹配的长锥形形状。In order to ensure that the inner end of the puncture needle does not shake when piercing the tube plug 33 and affect the accuracy of puncture, a puncture guide hole 332 for guiding the inner end of the puncture needle can be provided at the end of the tube plug 33. And the outer contour shape of the inner end of the puncture needle and the shape of the blind guide hole 332 are matched with each other. For example, referring to FIG. 3, the inner end of the puncture needle and the puncture blind guide hole 332 may be set in a long tapered shape that matches with each other.
需要说明的是,在穿刺针内端刺破管塞33的过程中,可能会出现穿刺针内端的轴向出水孔22被管塞材料堵塞的情况,从而导致引流被阻断而使得装置不能正常工作。因此,为避免出现断流情况,可在穿刺针内端的外周壁上设置与穿刺针2的针腔连通的周壁出水孔21,在此结构下,即使轴向出水孔22被管塞材料堵塞,房水也能通过周壁出水孔21流出至采液管管腔内,从而保证装置的工作可靠性。It should be noted that in the process of piercing the tube plug 33 at the inner end of the puncture needle, it may happen that the axial water outlet 22 at the inner end of the puncture needle is blocked by the material of the tube plug, causing the drainage to be blocked and the device not working properly. jobs. Therefore, in order to avoid the occurrence of cut-off, the peripheral wall water outlet hole 21 communicating with the needle cavity of the puncture needle 2 can be provided on the outer peripheral wall of the inner end of the puncture needle. With this structure, even if the axial water outlet hole 22 is blocked by the pipe plug material, The aqueous humor can also flow out into the lumen of the liquid collection tube through the water outlet hole 21 of the peripheral wall, thereby ensuring the working reliability of the device.
此外,周壁出水孔21与轴向出水孔22的轴向间距不宜过大,否则当轴向出水孔22插入至采液管管腔后,周壁出水孔21依然位于管塞33中而被堵塞,从而导致周壁出水孔21失去效用。为此, 可将周壁出水孔21的孔中心与轴向出水孔22的孔中心的轴向间距优选设置为不大于3mm,以保证当轴向出水孔22插入至采液管管腔后,周壁出水孔21也可位于采液管管腔内而不会被堵塞。In addition, the axial distance between the peripheral wall outlet hole 21 and the axial outlet hole 22 should not be too large, otherwise when the axial outlet hole 22 is inserted into the lumen of the liquid sampling tube, the peripheral wall outlet hole 21 is still located in the pipe plug 33 and is blocked. As a result, the water outlet hole 21 of the peripheral wall loses its effectiveness. For this reason, the axial distance between the hole center of the peripheral wall water outlet hole 21 and the hole center of the axial water outlet hole 22 can be preferably set to be no more than 3 mm to ensure that when the axial water outlet hole 22 is inserted into the lumen of the liquid collection tube, the peripheral wall The water outlet 21 can also be located in the lumen of the liquid sampling tube without being blocked.
在本发明的描述中,需要理解的是,术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the pointed device or element It must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.
此外,术语“第一”、“第二”仅用于描述目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中,“多个”的含义是至少两个,例如两个,三个等,除非另有明确具体的限定。In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.
在本发明中,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接,也可以是电连接或彼此可通讯;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系,除非另有明确的限定。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。In the present invention, unless otherwise clearly defined and defined, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. , Or integrated; it can be mechanically connected, or it can be electrically connected or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction relationship between two components, Unless otherwise clearly defined. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present invention can be understood according to specific circumstances.
在本发明中,除非另有明确的规定和限定,第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触,或第一和第二特征通过中间媒介间接接触。而且,第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方,或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方,或仅仅表示第一特征水平高度小于第二特征。In the present invention, unless expressly stipulated and defined otherwise, the first feature “on” or “under” the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. contact. Moreover, the "above", "above" and "above" of the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the level of the first feature is higher than the second feature. The “below”, “below” and “below” of the second feature of the first feature may mean that the first feature is directly below or obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
在本说明书的描述中,参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中,对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且,描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外,在不相互矛盾的情况下,本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean specific features described in conjunction with the embodiment or example , Structure, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above-mentioned terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples and the characteristics of the different embodiments or examples described in this specification without contradicting each other.
尽管上面已经示出和描述了本发明的实施例,可以理解的是,上述实施例是示例性的,不能理解为对本发明的限制,本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can comment on the foregoing within the scope of the present invention. The embodiment undergoes changes, modifications, substitutions and modifications.
Claims (10)
- 一种房水采集装置,其特征在于,所述房水采集装置(100)包括:An aqueous humor collection device, characterized in that the aqueous humor collection device (100) comprises:外筒体(1),设有穿刺针安装端和采液管安装端;The outer cylinder (1) is provided with a puncture needle installation end and a liquid sampling tube installation end;穿刺针(2),插装在所述穿刺针安装端中且包括穿刺针外端和伸入至外筒体筒腔内的穿刺针内端;The puncture needle (2) is inserted into the puncture needle installation end and includes an outer end of the puncture needle and an inner end of the puncture needle that extends into the cavity of the outer cylinder;采液管组件(3),可插拔移动地从所述采液管安装端插入至所述外筒体筒腔内且包括采液管(31)和用于密封在所述外筒体筒腔内的采液管管口的管塞(33);The sampling tube assembly (3) is pluggable and movably inserted from the installation end of the sampling tube into the barrel cavity of the outer cylinder and includes a sampling tube (31) and a tube for sealing the outer cylinder. Tube plug (33) of the nozzle of the liquid sampling tube in the cavity;其中,所述采液管组件(3)与外筒体内周壁之间形成有通气结构,该通气结构连通所述外筒体筒腔在所述穿刺针内端与所述管塞(33)之间的筒腔区域,所述房水采集装置(100)还包括用于限位所述采液管组件(3)沿径向位移且用于在所述采液管组件(3)与所述外筒体内周壁之间形成接触阻尼的限位缓冲结构。Wherein, a ventilation structure is formed between the liquid sampling tube assembly (3) and the inner peripheral wall of the outer cylinder, and the ventilation structure communicates with the cavity of the outer cylinder between the inner end of the puncture needle and the tube plug (33). In the cylindrical cavity area between the liquid collection device (100), the aqueous humor collection device (100) further includes a position for limiting the displacement of the liquid collection tube assembly (3) in the radial direction and for connecting the liquid collection tube assembly (3) to the A contact damping limit buffer structure is formed between the inner peripheral walls of the outer cylinder.
- 根据权利要求1所述的房水采集装置,其特征在于,所述限位缓冲结构包括从所述采液管组件(3)的外周壁或从所述外筒体内周壁凸出的限位凸起(6),该限位凸起(6)的径向两端分别连接所述采液管组件(3)的外周壁和所述外筒体内周壁。The aqueous humor collection device according to claim 1, wherein the limiting buffer structure comprises a limiting protrusion protruding from the outer peripheral wall of the sampling tube assembly (3) or from the inner peripheral wall of the outer cylinder From (6), the radial ends of the limiting protrusion (6) are respectively connected with the outer peripheral wall of the liquid sampling tube assembly (3) and the inner peripheral wall of the outer cylinder.
- 根据权利要求2所述的房水采集装置,其特征在于,所述限位缓冲结构包括沿所述采液管组件(3)的管长方向依次间隔设置或者沿所述管长方向连续延伸的所述限位凸起(6),所述限位凸起(6)沿所述管长方向的总跨度不小于采液管管长的一半。The aqueous humor collection device according to claim 2, characterized in that the limit buffer structure comprises a spaced-apart or continuous extension along the length of the tube assembly (3). The limiting protrusion (6), the total span of the limiting protrusion (6) along the tube length direction is not less than half of the tube length of the liquid sampling tube.
- 根据权利要求2所述的房水采集装置,其特征在于,所述限位凸起(6)一体成型在所述采液管(31)的外周壁上;或者,所述采液管组件(3)包括外套在所述采液管(31)的外周壁上的管套件(34),所述限位凸起(6)设置在所述管套件(34)的外周壁上。The aqueous humor collection device according to claim 2, wherein the limiting protrusion (6) is integrally formed on the outer peripheral wall of the liquid collection tube (31); or, the liquid collection tube assembly ( 3) comprising a tube set (34) sheathed on the outer peripheral wall of the liquid collection tube (31), and the limiting protrusion (6) is arranged on the outer peripheral wall of the tube set (34).
- 根据权利要求4所述的房水采集装置,其特征在于,所述管套件(34)为弹性管套件。The aqueous humor collection device according to claim 4, wherein the tube set (34) is an elastic tube set.
- 根据权利要求2所述的房水采集装置,其特征在于,所述限位缓冲结构包括沿周向依次间隔排布的多个所述限位凸起(6),多个所述限位凸起(6)之间的间隙形成为所述通气结构;The aqueous humor collection device according to claim 2, wherein the limit buffer structure comprises a plurality of the limit protrusions (6) arranged at intervals in the circumferential direction, and a plurality of the limit protrusions The gap between (6) is formed as the ventilation structure;或者,所述限位缓冲结构包括沿周向连续延伸成型的所述限位凸起(6),所述限位凸起(6)与所述采液管组件(3)的外周壁之间或所述限位凸起(6)与所述外筒体内周壁之间形成有作为所述通气结构的排气间隙。Alternatively, the limiting buffer structure includes the limiting protrusion (6) continuously extending in the circumferential direction, and between the limiting protrusion (6) and the outer peripheral wall of the sampling tube assembly (3) or An exhaust gap serving as the ventilation structure is formed between the limiting protrusion (6) and the inner peripheral wall of the outer cylinder.
- 根据权利要求6所述的房水采集装置,其特征在于,沿周向依次间隔排布的多个所述限位凸起(6)均呈凸点状。The aqueous humor collection device according to claim 6, wherein the plurality of limiting protrusions (6) arranged at intervals along the circumferential direction are all convex points.
- 根据权利要求6所述的房水采集装置,其特征在于,沿周向连续延伸成型的所述限位凸起(6)呈波纹状或斜齿状。The aqueous humor collection device according to claim 6, characterized in that the limiting protrusion (6) continuously extending in the circumferential direction is shaped like a corrugated or helical tooth.
- 根据权利要求1所述的房水采集装置,其特征在于,所述采液管组件(3)还包括用于固定安装所述采液管(31)的支撑管架(32),该支撑管架(32)的外周壁与所述外筒体内周壁之间形成有所述限位缓冲结构。The aqueous humor collection device according to claim 1, wherein the liquid sampling tube assembly (3) further comprises a supporting tube frame (32) for fixedly installing the liquid sampling tube (31), and the supporting tube The limiting buffer structure is formed between the outer peripheral wall of the frame (32) and the inner peripheral wall of the outer cylinder.
- 根据权利要求9所述的房水采集装置,其特征在于,所述采液管(31)与所述支撑管架(32)之间通过螺接固定或卡扣连接固定。The aqueous humor collection device according to claim 9, characterized in that the liquid collection tube (31) and the supporting tube frame (32) are fixed by screw connection or snap connection.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
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PCT/CN2019/094384 WO2021000256A1 (en) | 2019-07-02 | 2019-07-02 | Aqueous humor collection device |
PCT/CN2019/110062 WO2021000440A1 (en) | 2019-07-02 | 2019-10-09 | Aqueous humor collection device and aqueous humor collection method |
EP20834808.6A EP3995215A4 (en) | 2019-07-02 | 2020-06-18 | Reagent holder, testing apparatus assembly, aqueous humor collection device and aqueous humor collection method |
US17/624,393 US20220354468A1 (en) | 2019-07-02 | 2020-06-18 | Reagent holder, testing apparatus assembly, aqueous humor collection device and aqueous humor collection method |
JP2021577950A JP7337967B2 (en) | 2019-07-02 | 2020-06-18 | Reagent holder, detection device assembly, aqueous humor collection device and aqueous humor collection method |
PCT/CN2020/096860 WO2021000743A1 (en) | 2019-07-02 | 2020-06-18 | Reagent holder, testing apparatus assembly, aqueous humor collection device and aqueous humor collection method |
IL289549A IL289549A (en) | 2019-07-02 | 2022-01-02 | Reagent holder, testing apparatus assembly, aqueous humor collection device and aqueous humor collection method |
JP2023134836A JP2023164441A (en) | 2019-07-02 | 2023-08-22 | Reagent holder, detection device assembly, aqueous humor sampling device, and aqueous humor sampling method |
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