CN211511785U - Multi-station continuous lumbar puncture cerebrospinal fluid piezometer tube - Google Patents

Multi-station continuous lumbar puncture cerebrospinal fluid piezometer tube Download PDF

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CN211511785U
CN211511785U CN201921852720.5U CN201921852720U CN211511785U CN 211511785 U CN211511785 U CN 211511785U CN 201921852720 U CN201921852720 U CN 201921852720U CN 211511785 U CN211511785 U CN 211511785U
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pressure measuring
cerebrospinal fluid
port
measuring pipe
shell
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吴亮
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Beijing Ditan Hospital
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Beijing Ditan Hospital
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Abstract

The utility model relates to a medical instrument, a multistation is even with lumbar puncture cerebrospinal fluid pressure-measuring pipe promptly, and characteristics are: a three-way valve (2) is equipped with to pressure-measuring pipe (1) lower extreme, and three-way valve (2) have shell (3) and case (9), and the shell has three port (4), and one of them port (4) cooperatees with the lower extreme of pressure-measuring pipe (1), and another port (4) cooperatees with pjncture needle (7) tail end, and case (9) have three through-hole (10), and three through-hole (10) inner is linked together, and the outer end can be relative respectively with three port (4) of shell (3). Has the advantages that: after the puncture needle completes puncture, the handle can be twisted according to needs to perform various operations such as skull pressure measurement, liquid taking and delivery, drainage and pressure reduction, medicine injection and the like, instruments do not need to be repeatedly disassembled and assembled, particularly one or all ports can be closed according to needs, the operation is very simple and convenient, the operation difficulty is greatly reduced, and the cerebrospinal fluid loss and the pain of a patient are reduced.

Description

Multi-station continuous lumbar puncture cerebrospinal fluid piezometer tube
Technical Field
The utility model relates to a medical instrument, namely a multi-station lumbar puncture cerebrospinal fluid pressure measuring tube.
Background
Lumbar puncture is often required in the differential diagnosis of inflammatory lesions of the brain and spinal cord, vascular lesions of the brain and spinal cord, obstructive and non-obstructive spinal lesions, as well as in the examination of pneumoencephalography and iodized oil angiography of the spinal cavity. The operation process firstly punctures the puncture needle into the lumbar of a patient, and respectively carries out the following operations according to the requirements after leading out cerebrospinal fluid: firstly, cerebrospinal fluid enters a piezometer tube to measure intracranial pressure; secondly, sampling, namely extracting a small amount of cerebrospinal fluid for inspection; thirdly, drainage and pressure reduction are carried out on the patient with the excessive cranial pressure; fourthly, injecting medicine into the spine. The above procedure requires the use of different instruments. The pressure measuring tube for measuring cranial pressure is a transparent straight tube, the wall of the tube is provided with scale marks, the lower end of the tube is inserted into one end of a right-angle bent tube, the other end of the bent tube is connected with the end port of the tail of the puncture needle, cerebrospinal fluid can enter the tube, and the pressure value is measured through the height of the liquid level. While sampling or drainage requires a container to be attached to the puncture needle port. The injection of the medicine is carried out by engaging the tail end of the puncture needle with a syringe. In clinic, a lumbar puncture usually requires multiple operations. Because the used instruments have single purposes, different instruments are required to be replaced at the tail end of the puncture needle when a plurality of operations are carried out, and the operation steps and the operation difficulty are increased. For example: after the cranial pressure is measured, the pressure measuring tube is taken down and replaced by a liquid receiving bottle. The syringe is replaced for the injection of the medicament. Changing the instrument is not only cumbersome, but also can lose cerebrospinal fluid in the tube. Particularly, in the drainage and pressure reduction process, the piezometric tube needs to be taken down and the liquid receiving bottle needs to be used instead. Because the skull pressure can not be observed while the drainage is carried out, the manometric tube is required to be installed again to observe the skull pressure after a part of cerebrospinal fluid is led out, the skull pressure is repeatedly assembled and disassembled until the skull pressure is normal, the process is more complicated, the liquid loss is larger, the operation time is prolonged, and the pain of a patient is aggravated.
Disclosure of Invention
The utility model aims at providing a can survey the cerebrospinal fluid cranium respectively under the condition of once joining with pjncture needle tail end and press, get and send the inspection liquid, drainage decompression and inject the multistation of multiple operations such as medicine even use lumbar vertebrae puncture cerebrospinal fluid pressure-measuring pipe.
The above purpose is realized by the following technical scheme: the utility model provides a lumbar vertebrae puncture cerebrospinal fluid multistation is with pressure-measuring pipe, its characteristics are: the pressure measuring tube is a transparent straight tube, the lower end of the pressure measuring tube is provided with a three-way valve, the three-way valve is provided with a shell and a valve core, the shell is provided with three ports, one port is matched with the lower end of the pressure measuring tube, the other port is matched with the tail end of the puncture needle, the inner cavity of the shell is in running fit with the valve core, the valve core is provided with three through holes, the inner ends of the three through holes are communicated, and the outer ends of the three through holes can.
The central lines of the three ports of the shell are distributed in an inverted T shape, namely the two ports on the two sides are the same central line, and the central line of the port on the upper side is vertical to the central lines of the ports on the two sides.
The diameter of the outer end of the through hole of the valve core is larger than or equal to the diameter of the inner ends of the three ports of the shell.
The middle part of the valve core is provided with a rotating shaft which extends out of the shell through a shaft hole, and the outer end of the rotating shaft is provided with a handle.
The handle extends out of the three pull rods from the center line, and the three pull rods are respectively consistent with the three through holes of the valve core in direction.
The outer end of the lever is provided with a positioning bolt, the positioning bolt is provided with a sliding shaft, the sliding shaft penetrates through a sliding shaft hole in the outer end section of the lever, the inner end of the sliding shaft is provided with a ball wheel through a rotating shaft, a pressure spring is arranged on the sliding shaft on the inner side of the lever, the outer end of the pressure spring is in contact with the inner side of the lever through a bearing, the outer end section of the sliding shaft is provided with threads and is provided with a pressure regulating nut, and positioning pits matched with the ball wheel are formed in opposite points of a track line of the ball wheel and the central line of each port on the surface of the shell opposite to the.
And a section of elastic sleeve capable of swinging is arranged around the port of the pressure measuring pipe inserted on the upper side of the shell.
And the pressure measuring pipe is sleeved with a corrector for displaying a vertical state.
The corrector is provided with a sliding ring, an anti-skidding sleeve is arranged on the inner side of the sliding ring, the friction force between the inner diameter of the anti-skidding sleeve and the outer diameter of the pressure measuring pipe is larger than or equal to the gravity of the corrector, a calibration line is hung below the sliding ring through a hanging plate, the calibration line is annularly wound on the periphery of the pressure measuring pipe, and the plane where the calibration line is located is perpendicular to the central line of the pressure measuring pipe.
The corrector is a sealed transparent annular bottle sleeved on the periphery of the pressure measuring pipe, an anti-skidding sleeve is arranged between the annular bottle and the pressure measuring pipe, the friction force between the inner diameter of the anti-skidding sleeve and the outer diameter of the pressure measuring pipe is larger than or equal to the gravity of the corrector, a very striking calibration line is arranged in the middle of the annular bottle, and colored liquid is filled in the annular bottle. When the annular bottle is upright, the calibration line is in a horizontal state, and the upper surface of the colored liquid is superposed or parallel with the calibration line.
The utility model has the advantages that: after the puncture needle completes puncture, as long as one port of the three-way valve is connected with the tail end of the puncture needle, the handle can be twisted according to needs, various operations such as measuring cranial pressure, taking and delivering inspection liquid, draining and decompressing, injecting medicine and the like can be carried out, the device does not need to be repeatedly disassembled and assembled, particularly, one port can be closed or all ports can be closed simultaneously according to needs, the operation is very simple and convenient, the operation difficulty is greatly reduced, the loss of cerebrospinal fluid is reduced, the operation time is shortened, the pain of a patient is reduced, and the success of lumbar puncture is guaranteed.
Drawings
FIG. 1 is a front view of the first embodiment;
FIG. 2 is a left side view of the first embodiment;
FIG. 3 is a top view of the first embodiment;
FIG. 4 is a schematic view of a lumbar puncture procedure of the first embodiment;
FIG. 5 is a schematic view of the use of the first embodiment of a lumbar puncture cerebrospinal fluid pressure measuring tube;
FIG. 6 is a front view of the three-way valve structure of the first embodiment;
FIG. 7 is a partially enlarged structural view of a cranial pressure measuring operation of the first embodiment;
FIG. 8 is a partially enlarged view showing the construction of the cerebrospinal fluid recovery operation of the first embodiment;
FIG. 9 is a partially enlarged view of the cerebrospinal fluid taking and feeding operation of the first embodiment;
FIG. 10 is a partially enlarged structural view of the intrathecal injection operation of the first embodiment;
FIG. 11 is a partially enlarged structural view of the drainage pressure reducing operation of the first embodiment;
FIG. 12 is a partially enlarged configuration view of the pause operation of the first embodiment;
FIG. 13 is an enlarged front view of the three-way valve component of the second embodiment;
FIG. 14 is an enlarged left side view of the three-way valve component of the second embodiment;
FIG. 15 is an enlarged partial front view of a part locating peg of the second embodiment;
FIG. 16 is an enlarged front elevational view of the three-way valve housing of the third embodiment;
FIG. 17 is an enlarged front elevational view of the fourth embodiment of the component three-way valve housing and pressure sensing tube;
FIG. 18 is an enlarged front view of a fourth embodiment of a component orthotic;
FIG. 19 is an enlarged front elevational view of the components of the three-way valve housing and pressure sensing tube of the fifth embodiment;
FIG. 20 is an enlarged front view of a fifth embodiment of a component orthotic;
FIG. 21 is an enlarged top view of a fifth embodiment component corrector;
figure 22 is an enlarged front view of the fifth embodiment component corrector in an inclined state.
It can be seen in the figure that: the device comprises a pressure measuring tube 1, a three-way valve 2, a shell 3, a port 4, a handle 5, a pull rod 6, a puncture needle 7, a needle core 8, a valve core 9, a through hole 10, a liquid receiving bottle 11, an injector 12, a positioning pit 13, a positioning bolt 14, a sliding shaft hole 15, a sliding shaft 16, a pressure regulating nut 17, a bearing 18, a pressure spring 19, a ball wheel 20, a rotating shaft 21, an elastic sleeve 22, a corrector 23, a sliding ring 24, an anti-skidding sleeve 25, a hanging plate 26, a calibration line 27, an annular bottle 28 and colored liquid 29.
Detailed Description
The first embodiment: fig. 1, fig. 2 and fig. 3 illustrate a multi-station continuous lumbar puncture cerebrospinal fluid pressure measuring tube, and it can be seen that the pressure measuring tube 1 is a transparent straight tube, and scale marks for indicating the height are arranged on the tube wall. Compared with the existing similar pressure measuring pipe, the structure of the lower end of the pressure measuring pipe is changed. The lower end of the existing piezometric tube is inserted into the upper port of a right-angle elbow. When in use, the other end of the elbow is jointed with the tail end of the puncture needle. The lower end of the pressure measuring pipe of the embodiment is not provided with a bent pipe, but is inserted into a port of a three-way valve 2. When in use, firstly, the lumbar puncture is carried out, and then the three-way valve is jointed with the tail end of the puncture needle, thus carrying out a plurality of operations.
The operation method of lumbar puncture can be seen by combining the following steps with the operation method of figure 4: the patient lies on his side, curls his body, and pierces the lumbar vertebra with the puncture needle 7 by the medical staff.
The method of use of the piezometric tube can be seen in connection with fig. 5: after the puncture is successful, the needle core 8 is drawn out, the outflow of cerebrospinal fluid is seen, one port of the three-way valve below the pressure-measuring tube is immediately connected with the tail end of the puncture needle, the cerebrospinal fluid can enter the pressure-measuring tube, and when the liquid level of the cerebrospinal fluid fluctuates along with respiration and does not rise any more, the cerebrospinal fluid pressure can be recorded.
The structure of the three-way valve can be seen in connection with fig. 6: the three-way valve 2 comprises a housing 3 and a valve spool 9. The housing 3 is a tee with three ports 4. In the direction shown in the figure, one port on the upper side of the housing is A, the left port is B, and the right port is C. The port A is matched with the lower end of the pressure measuring tube, one of two ports B and C at two sides is matched with the tail end of the puncture needle, and the other port can be matched with apparatuses such as a liquid receiving bottle or an injector. The central lines of the three ports are preferably distributed in an inverted T shape, namely, the ports B and C on the two sides are the same central line, and the central line of the port A on the upper side is vertical to the central lines of the ports B and C on the two sides.
It can be seen that the inner cavity of the housing 3 is in a precise rotational fit with the valve element 9. Because the valve element is intended to rotate within the housing, the space within the housing cavity and the shape of the valve element are preferably spheres or cylinders, which are illustrated as cylinders. The valve core 9 is provided with three through holes 10, i.e., a through hole a, a through hole b, and a through hole c. The inner ends of the three through holes are communicated. The centerline structure of the three through holes is the same as the centerline structure of the three ports of the housing. When the port is in an inverted T shape, the through hole b and the through hole c are the same center line, and the center line of the through hole a is perpendicular to the center lines of the through hole b and the through hole c.
Preferably, the outer end diameter of each through hole is larger than or equal to the inner end diameter of the three ports of the shell. Thus, when the through hole 10 is opposite to the port 4, the through hole completely covers the port, and the liquid can better circulate.
In order to facilitate the operation of the rotation of the valve core 9, the middle part of the valve core is provided with a rotating shaft, the rotating shaft extends out of the shell through the shaft hole, and the outer end of the rotating shaft is provided with a handle 5. The handle 5 has many structural forms, and the figure recommends one: the handle 5 extends outwards from the central line of the rotating shaft to form three pull rods 6. The three levers 6 are preferably aligned with the center lines of the three through holes 10 of the valve body 9. Thus, twisting the handle will know where the valve cartridge is inside.
Fig. 7-11 illustrate the operation of several operations, respectively.
Fig. 7 illustrates the operation of measuring cranial pressure. It can be seen that the lower end of the pressure measuring tube 1 is mounted in a port a on the upper side of the three-way valve housing 3, the tail end of the puncture needle 7 is engaged with a port B on the left side of the housing, a through hole c of the valve element 9 is upwardly opposed to the port a and the pressure measuring tube 1, another through hole B is downwardly closed by the housing, and a through hole a is opposed to the port B and the tail end of the puncture needle 7. The right port C of the housing is closed by the valve core. The specific method comprises the following steps: the puncture needle is used for puncturing the vertebra, then the needle core is drawn out, the tail end is jointed with the port B on the left side of the three-way valve, the cerebrospinal fluid enters the piezometer tube, the cerebrospinal fluid reaches the highest position when the liquid level is stable and slightly floats along with the respiration of a person, and the cranial pressure value can be obtained according to the scale on the tube wall.
FIG. 8 illustrates the recovery of cerebrospinal fluid. It can be seen that a through hole b of the valve core 9 is upward opposite to the port A and the pressure measuring tube 1, a through hole C is downward sealed by the shell, a through hole a is opened with the port C, and the port C is opposite to the liquid receiving bottle 11. The left port B of the housing is closed by the spool. This approach is well suited for the recovery of cerebrospinal fluid from the pressure sensing tube. The specific method comprises the following steps: after the cranial pressure measurement is finished, the handle is twisted to enable the valve core to reach the position shown in the figure, and cerebrospinal fluid in the pressure measuring tube flows into the liquid receiving bottle 11 through the through hole a and the port C. Thus, the cerebrospinal fluid in the pressure measuring tube can be used for inspection and analysis.
FIG. 9 illustrates the operation of extracting cerebrospinal fluid. It can be seen that the valve element 9 has a through-opening C opposite the port B and the puncture needle 7, a through-opening B opposite the port C, and a through-opening a which is closed downwards by the housing. The through hole b is opened with a port C which is opposite to the liquid receiving bottle 11. Port a of the housing is closed by the spool. This approach is more suitable for situations where cerebrospinal fluid extraction is required without measuring cranial pressure.
FIG. 10 illustrates the operation of injecting a drug intrathecally. It can be seen that a through hole C of the cartridge 9 communicates with port B and the puncture needle 7, the through hole B opens into port C, and the outlet of the syringe 12 is inserted into port C. The through hole a is closed by the housing downward, and the port a of the housing is closed by the valve core. Thus, the medicine can be injected into the spine.
Figure 11 illustrates the operation of the drainage of reduced pressure. It can be seen that the through-hole a, the through-hole B, the through-hole C of the spool 9 are opposed to the port a, the port B, the port C of the housing, respectively. After puncture, the cerebrospinal fluid can reach the piezometric tube 1 and the port C, and then can enter the liquid receiving bottle 11 outside through the port C. The advantages of this approach are: cranial pressure values can be seen while draining. When the cranial pressure is high, the drainage is continued, and when the cranial pressure is qualified, the drainage is stopped. Therefore, the method can change the mode that the current can not observe the instant cranial pressure, drain blindly and repeatedly disassemble and assemble the piezometer tube to measure the pressure, obviously improve the operation effect, greatly reduce the requirements on the experience and technical level of an operator, and is a revolutionary improvement on the cerebrospinal fluid drainage decompression.
Fig. 12 illustrates a state in which the operation is suspended. As can be seen, the through-hole a, the through-hole B, and the through-hole C of the valve body 9 are not opposed to the ports a, B, and C of the housing, respectively. Obviously, the cerebrospinal fluid in the puncture needle stops at the tail end opening at the moment. Obviously, this state is suitable for being adopted when the operation is suspended or stopped. The mode that the similar instruments are not adopted at present is also an unexpected effect.
The second embodiment: the improvement is based on the first embodiment. As mentioned above, in operation, the valve core in the three-way valve is rotated to a designated position under the operation of the handle, so that each through hole is accurately opposite to the related port. And this is determined by the position of the lever of the handle. The direction of each lever is consistent with the corresponding through hole of the valve core, and the position of the through hole can be determined through the position of the lever. However, this positioning method requires a worker to carefully observe the positioning, and the positioning method may be misplaced with little attention, which is laborious to use. To solve this problem, the present embodiment recommends a new scheme. As shown in fig. 13 and 14, a set pin 14 is installed at an outer end of at least one of the levers 6. Referring to fig. 15, the positioning pin 14 is provided with a sliding shaft 16, the sliding shaft 16 passes through a sliding shaft hole 15 at the outer end section of the trigger lever 6, and the inner end of the sliding shaft 16 is provided with a ball wheel 20 through a rotating shaft 21. A pressure spring 19 is sleeved on a sliding shaft 16 on the inner side of the spanner rod, the outer end of the pressure spring 19 is in contact with the inner side of the spanner rod through a bearing 18, and the outer end section of the sliding shaft is provided with threads and is provided with a pressure regulating nut 17. Meanwhile, on the surface of the housing 3 opposite to the lever 6 of the handle, a positioning pit 13 matched with the ball wheel 20 is formed at the opposite point of the rotation track line of the ball wheel 20 and the central line of each port 4. The diameter of the locating pit 13 is preferably slightly larger than the diameter of the ball wheel 20, and the edge of the locating pit is in smooth transition.
When the ball wheel is operated, the trigger lever 6 is twisted, the ball wheel 20 runs on the surface of the shell 3, and when the ball wheel reaches the central line of any one port, the ball wheel slides into the positioning pit 13. Under the pressure of the pressure spring 19, the ball wheel vibrates a little bit, and an operator can easily feel that the ball wheel can stop or continue to rotate as required. Due to the smooth transition of the edge of the positioning pit, the ball wheel can easily pass through when the rotation is continued. In addition, as can be seen from fig. 15, since the bearing 18 is arranged between the pressure spring 19 and the trigger lever 6 for supporting, the sliding shaft can rotate in the sliding shaft hole, and the ball wheel is a universal wheel which can rotate around the rotating shaft and can also rotate along with the sliding shaft. The universal wheels can rotate flexibly, and the operators can save labor. With the above mechanism, the working position of each through hole 10 of the valve core 9 can be accurately determined.
Third embodiment: improved on the basis of the previous embodiment. As can be seen, the pressure measuring pipe is perpendicular to the horizontal plane when working, and the measured pressure can be accurate. The pressure measuring pipe is inserted into a port A on the upper side of the three-way valve, but a rigid integral structure is formed between the port A and the shell of the three-way valve, and the included angle between the port A and the port B is a fixed right angle. Thus, in use, the patient must be correctly adjusted for a vertical position of the piezometric tube relative to the horizontal plane. Obviously, it is not easy to adjust the posture of the patient, especially for the patient with poor self-control ability such as children. To solve this problem, the present embodiment provides a new structure. As shown in FIG. 16, a section of elastic sleeve 22 capable of swinging is arranged around the port A of the pressure measuring pipe inserted on the upper side of the shell. The flexibility of the elastic sleeve is moderate, and the elastic sleeve 22 can be kept in an upright state even when the port a is perpendicular to the horizontal plane. When the port A is inclined, the angle of the elastic sleeve can be adjusted by pushing the piezometer tube by hand. Thus, even if the patient is not in the correct prone position, the pressure measuring tube can be kept upright by manual adjustment.
The fourth embodiment: improved on the basis of the third embodiment. The port A of the three-way valve shell 3 adopts an elastic sleeve 22, and the verticality of the pressure measuring pipe and the horizontal plane can be manually adjusted. However, such adjustment still depends on the operator's feeling, and also increases the workload of the operator. Moreover, the feeling of the human body is sometimes inaccurate, and particularly, the human body is easy to make mistakes under the condition of tense operation. To solve this problem, this example recommends a new structure. As shown in FIG. 17, an aligner 23 is fitted over the pressure measuring tube 1. As can be seen in connection with fig. 18: the orthosis 23 has a slip ring 24, and the slip ring 24 is provided with an anti-slip sleeve 25 on the inner side. Of course, the anti-slip sleeve 25 may be a material layer integrated with the sliding ring, or may be made of a transparent elastic material, and a small amount of interference fit is preferably provided between the inner diameter of the anti-slip sleeve and the outer diameter of the pressure measuring tube 1, so that the friction force between the inner diameter of the anti-slip sleeve and the outer diameter of the pressure measuring tube is greater than or equal to the gravity of the corrector. Therefore, the sliding ring can be stabilized at a certain position of the piezometric tube, and the position can be changed only by pulling manually. A calibration line 27 is hung below the sliding ring 24 through a hanging plate 26, the calibration line 27 is annular and surrounds the periphery of the pressure measuring pipe, and the plane where the calibration line is located is perpendicular to the center line of the pressure measuring pipe.
When the cerebrospinal fluid enters the piezometer tube and is stable, the sliding ring 24 of the corrector 23 can be pulled, so that the calibration line 27 reaches the liquid level of the cerebrospinal fluid. At the moment, if the pressure measuring pipe is inclined, the liquid level and the calibration line form an included angle, the pressure measuring pipe is pushed to enable the cerebrospinal fluid plane to be consistent with the calibration line, and accurate numerical values can be read.
Fifth embodiment: an appliance according to the third embodiment is improved. As shown in fig. 19, 20 and 21, the corrector 23 is a hollow sealed transparent ring-shaped bottle 28 which is sleeved on the periphery of the piezometric tube 1. The inner side of the annular bottle is provided with an anti-slip sleeve 25. Of course, the anti-slip sleeve 25 may be a material layer integrated with the sliding ring, or may be made of a transparent elastic material, and the friction force between the inner diameter of the anti-slip sleeve and the outer diameter of the pressure measuring tube is larger than or equal to the gravity of the corrector. Therefore, the sliding ring can be stabilized at a certain point of the piezometer tube, and the position can be changed only by pulling manually. The middle part of the annular bottle is provided with a very striking calibration line 27, and the annular bottle is filled with colored liquid 29. When the ring bottle is erected, the calibration line is in a horizontal state, and the upper surface of the colored liquid 29 is overlapped with or parallel to the calibration line.
In operation, when the pressure measuring tube is upright, as shown in FIG. 20, the upper surface of the colored liquid 29 is coincident with or parallel to the calibration line, at which time the cerebrospinal pressure reading is correct. When the pressure measuring pipe is inclined, as shown in fig. 22, the upper surface of the colored liquid intersects with the calibration line, and the pressure measuring pipe needs to be pushed to an upright position to obtain a correct pressure value.
Originally, the scale marks on the wall of the pressure measuring tube can also have the function of the calibration line, but the pressure measuring tube is thin, and the chroma of cerebrospinal fluid is shallow and fuzzy, so that the observation is difficult. The annular bottle is adopted, the diameter of the pressure measuring pipe is increased, and the calibration line and the colored liquid are bright in color, so that the annular bottle is more convenient to identify. In addition, the position of the ring-shaped bottle can be changed, so that the observation of the plane on the cerebrospinal fluid is not obstructed, and the ring-shaped bottle has strong practicability.

Claims (10)

1. The utility model provides a multistation is with lumbar vertebrae puncture cerebrospinal fluid pressure-measuring pipe even, its characterized in that: the pressure measuring pipe (1) is a transparent straight pipe, a three-way valve (2) is installed at the lower end of the pressure measuring pipe, the three-way valve (2) is provided with a shell (3) and a valve core (9), the shell is provided with three ports (4), one port (4) is matched with the lower end of the pressure measuring pipe (1), the other port (4) is matched with the tail end of a puncture needle (7), the inner cavity of the shell (3) is in running fit with the valve core (9), the valve core (9) is provided with three through holes (10), the inner ends of the three through holes (10) are communicated, and the outer ends of the three through holes can be respectively opposite to the three ports.
2. The multi-station continuous lumbar puncture cerebrospinal fluid pressure measuring tube according to claim 1, which is characterized in that: the central lines of the three ports (4) of the shell (3) are distributed in an inverted T shape, namely the two ports (4) on the two sides are the same central line, and the central line of the port on the upper side is vertical to the central lines of the ports on the two sides.
3. The multi-station continuous lumbar puncture cerebrospinal fluid pressure measuring tube according to claim 1, which is characterized in that: the diameter of the outer end of the through hole (10) of the valve core (9) is larger than or equal to the diameter of the inner end of the three ports (4) of the shell.
4. The multi-station continuous lumbar puncture cerebrospinal fluid pressure measuring tube according to claim 1, which is characterized in that: the middle part of the valve core (9) is provided with a shaft hole with a rotating shaft extending out of the shell (3), and the outer end of the rotating shaft is provided with a handle (5).
5. The multi-station continuous lumbar puncture cerebrospinal fluid pressure measuring tube according to claim 4, which is characterized in that: the handle (5) extends out of the three pull rods (6) from the center line, and the three pull rods (6) are respectively consistent with the three through holes (10) of the valve core (9) in direction.
6. The multi-station continuous lumbar puncture cerebrospinal fluid pressure measuring tube according to claim 5, which is characterized in that: the outer end of the wrench rod (6) is provided with a positioning bolt (14), the positioning bolt (14) is provided with a sliding shaft (16), the sliding shaft (16) penetrates through a sliding shaft hole (15) in the outer end section of the wrench rod (6), the inner end of the sliding shaft (16) is provided with a ball wheel (20) through a rotating shaft (21), a pressure spring (19) is arranged on the sliding shaft (16) on the inner side of the wrench rod (6), the outer end of the pressure spring (19) is in contact with the inner side of the wrench rod (6) through a bearing (18), the outer end section of the sliding shaft (16) is provided with threads and is provided with a pressure regulating nut (17), a positioning pit (13) matched with the ball wheel is formed in a point, opposite to the central line of each port (4), of a track line of the ball wheel (20).
7. The multi-station continuous lumbar puncture cerebrospinal fluid pressure measuring tube according to claim 1, which is characterized in that: and a section of swingable elastic sleeve (22) is arranged around the port of the pressure measuring pipe (1) inserted in the upper side of the shell (3).
8. The multi-station continuous lumbar puncture cerebrospinal fluid pressure measuring tube according to claim 7, which is characterized in that: the pressure measuring pipe is sleeved with a corrector (23) for displaying a vertical state.
9. The multi-station continuous lumbar puncture cerebrospinal fluid pressure measuring tube according to claim 8, which is characterized in that: the straightener (23) is provided with a sliding ring (24), an anti-skidding sleeve (25) is arranged on the inner side of the sliding ring, the friction force between the inner diameter of the anti-skidding sleeve (25) and the outer diameter of the pressure measuring pipe (1) is larger than or equal to the gravity of the straightener, a calibration line (27) is hung below the sliding ring (24) through a hanging plate (26), the calibration line (27) is annularly wound on the periphery of the pressure measuring pipe (1), and the plane where the calibration line (27) is located is perpendicular to the central line of the pressure measuring pipe (1).
10. The multi-station continuous lumbar puncture cerebrospinal fluid pressure measuring tube according to claim 8, which is characterized in that: the correction device (23) is a sealed transparent annular bottle (28) sleeved on the periphery of the pressure measuring pipe (1), an anti-skidding sleeve (25) is arranged between the annular bottle (28) and the pressure measuring pipe (1), the friction force between the inner diameter of the anti-skidding sleeve (25) and the outer diameter of the pressure measuring pipe (1) is larger than or equal to the gravity of the correction device (23), a striking calibration line (27) is arranged in the middle of the annular bottle (28), colored liquid (29) is filled in the annular bottle, when the annular bottle (28) is upright, the calibration line (27) is in a horizontal state, and the upper surface of the colored liquid (29) is coincident or parallel to the calibration line.
CN201921852720.5U 2019-10-25 2019-10-25 Multi-station continuous lumbar puncture cerebrospinal fluid piezometer tube Active CN211511785U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112932549A (en) * 2021-01-28 2021-06-11 中国人民解放军陆军军医大学 Experiment rat cerebrospinal fluid extraction device based on double syringes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112932549A (en) * 2021-01-28 2021-06-11 中国人民解放军陆军军医大学 Experiment rat cerebrospinal fluid extraction device based on double syringes
CN112932549B (en) * 2021-01-28 2022-07-05 中国人民解放军陆军军医大学 Experiment rat cerebrospinal fluid extraction device based on double syringes

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Date Code Title Description
GR01 Patent grant
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract
EE01 Entry into force of recordation of patent licensing contract

Assignee: Suzhou Heshu Health Technology Co.,Ltd.

Assignor: BEIJING DITAN HOSPITAL CAPITAL MEDICAL University

Contract record no.: X2022990000319

Denomination of utility model: Multi station continuous lumbar puncture cerebrospinal fluid manometric tube

Granted publication date: 20200918

License type: Common License

Record date: 20220622