A novel infusion therapy needle

Abstract

The present invention relates to the field of medical devices, and in particular to a new type of perfusion treatment needle, including a puncture needle, the puncture needle including a connected needle body and a needle tail seat, the needle body including a first hollow cavity, a guide structure is provided on the cavity wall of the first hollow cavity, and the extension direction of the guide structure is parallel to the axial extension direction of the needle body; it also includes a pressure detection component; it also includes an adjustment mechanism for regulating the reciprocating movement of the pressure detection component along the extension direction of the guide structure; a connecting piece is provided on the needle tail seat; a second hollow cavity is provided in the connecting piece, and the second hollow cavity is connected to the first hollow cavity. The present invention adopts a micro pressure sensor, which is arranged inside the needle body, so as to achieve the purpose of measuring the pressure of the perfusion site in the body. At the same time, the position of the pressure sensor can be conveniently adjusted through the adjustment mechanism, so as to detect the pressure at different positions and obtain more pressure information.

Description

Technical Field

[0001] The invention relates to the field of medical devices, in particular to a novel perfusion treatment needle. Background Art

[0002] In many cases, when performing intracavitary treatment, it is necessary to infuse liquid medicine into the surrounding tissues of the human body to protect the surrounding tissues or to make the cavity tissues close to the treatment equipment. For example, when using radio frequency and laser catheters for interventional treatment, liquid medicine infusion may be required. Among them, a typical application is the use of radio frequency host and catheter (hereinafter referred to as varicose vein radio frequency treatment system) for lower limb varicose vein thermocoagulation treatment, and it is necessary to inject anesthetic swelling fluid into the surrounding tissues of the lower limb veins. On the one hand, under the pressure of the anesthetic swelling fluid, the diseased blood vessel wall is close to the radio frequency catheter, and the blood in the blood vessel is discharged to ensure the efficient transfer of heat, thereby ensuring the effectiveness of the treatment. At the same time, the anesthetic swelling fluid can isolate the treatment site and the surrounding normal tissues, and play a role in protecting normal tissues. Furthermore, the anesthetic swelling fluid can also have an anesthetic effect and improve the patient's experience.

[0003] At present, the varicose vein radiofrequency treatment system does not detect the pressure of the blood vessels on the radiofrequency catheter, and the drug infusion system does not detect the pressure near the puncture device in the body. Therefore, the speed and dosage of drug infusion are mostly determined by the surgeon's own experience. Then, there may be problems such as too fast speed, too much or too little dosage, especially for those who have just started the relevant procedures. Summary of the invention

[0004] In view of the above shortcomings of the prior art, the purpose of the present invention is to provide a new type of perfusion treatment needle, which includes an in vivo pressure detection component that can dynamically detect the in vivo pressure during the perfusion process and feed it back to the external equipment as a reference for the perfusion effect to guide drug perfusion, thereby solving the problems in the prior art.

[0005] To achieve the above-mentioned purpose and other related purposes, the present invention provides a new type of perfusion treatment needle, including a puncture needle, the puncture needle including a connected needle body and a needle tail seat, the needle body including a first hollow cavity, a guide structure is provided on the cavity wall of the first hollow cavity, and the extension direction of the guide structure is parallel to the axial extension direction of the needle body; it also includes a pressure detection component; it also includes an adjustment mechanism for regulating the reciprocating movement of the pressure detection component along the extension direction of the guide structure; a connecting piece is provided on the needle tail seat; a second hollow cavity is provided in the connecting piece, and the second hollow cavity is connected to the first hollow cavity.

[0006] In some embodiments of the present invention, the pressure detection assembly includes a connected pressure detection device and a signal transmission shaft, the pressure detection device is arranged in the first hollow cavity, the pressure detection device is close to the needle tip of the needle body; the signal transmission shaft is connected to the adjustment mechanism.

[0007] In some embodiments of the present invention, the regulating mechanism is a composite regulating mechanism.

[0008] In some embodiments of the present invention, the composite adjustment mechanism includes a connected drive component and a transmission component, and the end of the transmission component away from the drive component is connected to the signal transmission shaft; the drive component can drive the transmission component to drive the pressure detection device and the signal transmission shaft to reciprocate along the axial extension direction of the guide structure.

[0009] In some embodiments of the present invention, the composite adjustment mechanism further includes a handle housing, and the handle housing includes an upper handle housing and a lower handle housing; the upper handle housing and the lower handle housing are respectively connected to the needle tail seat.

[0010] In some embodiments of the present invention, the driving assembly includes a driving part and an adjustment handle sleeved on the driving part; the driving part is connected to the transmission assembly.

[0011] In some embodiments of the present invention, the transmission assembly includes a first transmission part, the first transmission part includes a driving gear shaft, the extension direction of the driving gear shaft is parallel to the axial extension direction of the signal transmission shaft; the driving part is sleeved on the driving gear shaft, and the driving gear shaft is also provided with a position driving gear and a driving driving gear; it also includes a first driven gear, the first driven gear is meshed with the driving driving gear for transmission; preferably, the first driven gear and the driving driving gear are bevel gears.

[0012] In some embodiments of the present invention, the transmission assembly includes a second transmission part connected to the first transmission part; the second transmission part includes a first roller, the first roller and the first driven gear are coaxially connected; and further includes a second roller, and the end of the signal transmission shaft away from the puncture needle is arranged between the first roller and the second roller;

[0013] Alternatively, the second transmission portion includes a second driven gear, which is coaxially connected to the first driven gear; and also includes a rack meshing with the second driven gear; the extension direction of the rack is parallel to the extension direction of the signal transmission shaft; the rack is connected to the signal transmission shaft through a connecting rod.

[0014] In some embodiments of the present invention, the first roller and the first driven gear are arranged on the driven gear shaft, and the driven gear shaft is installed on the lower shell of the handle; the second roller is arranged on the roller shaft, and the roller shaft is arranged on the upper shell of the handle; the extension direction of the driven gear shaft is parallel to the extension direction of the roller shaft;

[0015] Or; it also includes a second guide seat, the extension direction of the second guide seat is parallel to the axial extension direction of the signal transmission axis; the rack and the second guide seat are respectively provided with matching guide grooves and guide columns; the rack can move back and forth along the second guide seat.

[0016] In some embodiments of the present invention, it further includes a position detection device and a position driven gear meshing with the position driving gear; the position detection device is connected to the position driven gear; and also includes a connector; the position detection device is electrically connected to the connector.

[0017] In some embodiments of the present invention, a seal is provided between the needle tail seat and the handle housing.

[0018] In some embodiments of the present invention, a connector is further included, and the signal transmission shaft is electrically connected to the connector.

[0019] In some embodiments of the present invention, the handle housing and the adjusting handle are equipped with a first limiting structure, and the first limiting structure includes a limiting column and a limiting sheet to cooperate with the limiting of the adjusting handle.

[0020] In some embodiments of the present invention, the adjustment handle is provided with scale markings.

[0021] As described above, the novel perfusion treatment needle of the present invention has the following beneficial effects:

[0022] The present invention adopts a micro pressure sensor, which is arranged inside the needle body, so as to achieve the purpose of measuring the pressure of the perfusion site in the body. At the same time, the position of the sensor can be conveniently adjusted by adjusting the handle, so as to detect the pressure at different positions and obtain more pressure information. In addition, the present invention can realize the intelligentization of the rate and dosage of drug liquid perfusion, avoid large errors in the perfusion rate and dosage caused by the lack of experience of the operator, and promote the standardization of drug liquid perfusion during intracavitary clinical surgery. In addition to being used for perfusion, the invention can also be used as an injection needle in other occasions where pressure detection is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Shown is a front view of an irrigated treatment needle according to a first embodiment of the present invention.

[0024] Figure 2 Shown is an axonometric view of an irrigated treatment needle according to a first embodiment of the present invention.

[0025] Figure 3 A partial isometric view of an infusion therapy needle according to a first embodiment of the present invention is shown (without the handle cover and the adjustment wheel).

[0026] Figure 4 The illustration is a cutaway view of the adjustment wheel of the perfusion treatment needle according to the first embodiment of the present invention.

[0027] Figure 5 An axial cross-sectional view of an irrigated treatment needle according to a first embodiment of the present invention is shown.

[0028] Figure 6 An axial cross-sectional view of an irrigated treatment needle according to a first embodiment of the present invention is shown.

[0029] Figure 7 An axial cross-sectional view of an irrigation treatment needle according to a first embodiment of the present invention is shown (the pressure detection device is at the front end).

[0030] Figure 8 The α-plane cross-sectional view of the perfusion treatment needle according to the first embodiment of the present invention is shown (the pressure detection device is at the front end).

[0031] Fig. 9 An axial cross-sectional view of the perfusion treatment needle according to the first embodiment of the present invention is shown (the pressure detection device is at a certain position in the middle).

[0032] Fig.10 The α-plane cross-sectional view of the perfusion treatment needle according to the first embodiment of the present invention is shown (the pressure detection device is at a certain position in the middle).

[0033] Fig.11 An axial cross-sectional view of an irrigation treatment needle according to a first embodiment of the present invention is shown (the pressure detection device is at the tail end).

[0034] Fig.12 The α-plane cross-sectional view of the perfusion treatment needle according to the first embodiment of the present invention is shown (the pressure detection device is at the tail end).

[0035] Fig.13 A partial axonometric view of the perfusion therapy needle according to the second embodiment of the present invention is shown (seen from the front of the rack, with the handle cover and the adjustment wheel removed).

[0036] Fig.14 A partial axonometric view of the perfusion therapy needle according to the second embodiment of the present invention is shown (seen from the back of the rack, with the handle cover and adjustment wheel removed).

[0037] Fig.15 A partial view of the irrigation treatment needle according to the second embodiment of the present invention (seen from the upper end face of the rack)

[0038] Fig.16 An axial cross-sectional view of an irrigation treatment needle according to a second embodiment of the present invention is shown.

[0039] Fig.17 A partial cross-sectional view of an irrigation treatment needle according to a second embodiment of the present invention is shown.

[0040] Fig.18 An axial cross-sectional view of an irrigation treatment needle according to a second embodiment of the present invention is shown (the pressure detection device is at the front end).

[0041] Fig.19 An axial cross-sectional view of an irrigation treatment needle according to a second embodiment of the present invention is shown (the pressure detection device is at a certain position in the middle).

[0042] Fig. 20 An axial cross-sectional view of an irrigation treatment needle according to a second embodiment of the present invention is shown (the pressure detection device is at the tail end).

[0043] Component number description

[0044] 10. Puncture needle

[0045] 11 Needle body

[0046] 111 First hollow cavity

[0047] 12 needle tailstock

[0048] 121 Second hollow cavity

[0049] 122 Connectors

[0050] 13. Pressure detection components

[0051] 131 Pressure detection device

[0052] 132 signal transmission shaft

[0053] 14. Guiding structure

[0054] 20 scale mark

[0055] 30 Compound adjustment mechanism

[0056] 31 Drive components

[0057] 311 Adjustment handle

[0058] 312 Drive unit

[0059] 32 Transmission components

[0060] 321 First Transmission Unit

[0061] 3211 driving gear shaft

[0062] 3212 Position driving gear

[0063] 3213 Drive gear

[0064] 3214 First driven gear

[0065] 322 Second transmission unit

[0066] 3221 First Roller

[0067] 3222 Second roller

[0068] 3223 Driven gear shaft

[0069] 3224 Roller shaft

[0070] 3225 Second driven gear

[0071] 3226 Rack

[0072] 3227 Connecting rod

[0073] 3228 Second guide seat

[0074] 3229 Guide column

[0075] 33 Handle upper shell

[0076] 34 Handle lower shell

[0077] 35 Position detection device

[0078] 36 position driven gear

[0079] 37 First limit structure

[0080] 371 Limiting column

[0081] 372 Limiting piece

[0082] 381 First Cable

[0083] 382 Second Cable

[0084] 391 Second limit structure

[0085] 392 The third limit structure

[0086] 40 Connectors

[0087] 50 Seals DETAILED DESCRIPTION

[0088] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0089] See also Figures 1 to 20 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0090] refer to Figures 1 to 20 The embodiment of the present invention provides a novel perfusion treatment needle, including a puncture needle 10, wherein the puncture needle 10 includes a needle body 11 and a needle tail seat 12 connected to each other, wherein the needle body 11 includes a first hollow cavity 111, and a guide structure 14 is provided on the cavity wall of the first hollow cavity 111, wherein the extension direction of the guide structure 14 is parallel to the axial extension direction of the needle body 11; further including a pressure detection component 13; further including an adjustment mechanism for regulating the reciprocating movement of the pressure detection component 13 along the extension direction of the guide structure 14; Figure 5 , a connecting piece 122 is provided on the needle tail seat 12; a second hollow cavity 121 is provided in the connecting piece 122, and the second hollow cavity 121 is connected to the first hollow cavity 111. In the present invention, when the puncture needle 10 punctures into the patient's body, the perfusion liquid is perfused into the patient's body through the first hollow cavity 111 through the second hollow cavity 121 of the connecting piece 122, and the pressure detection component 13 is arranged inside the needle body 11, so as to timely measure the pressure of the perfusion part in the body. At the same time, the pressure detection component 13 can be adjusted by adjusting the movement of the pressure detection component 13 along the extension direction of the guide structure 14 through the adjustment mechanism, so as to detect the pressure at different positions and obtain more pressure information. The device and principle of the present invention can also be used in other situations where the position needs to be adjusted.

[0091] In the novel perfusion treatment needle provided in the embodiment of the present invention, reference Figure 1 , Fig.16The pressure detection assembly 13 includes a connected pressure detection device 131 and a signal transmission shaft 132. The pressure detection device 131 is arranged in the first hollow cavity 111, and the pressure detection device 131 is close to the needle tip of the needle body 11; the signal transmission shaft 132 is connected to the adjustment mechanism. When the puncture needle 10 punctures into the patient's body for perfusion, the adjustment mechanism can adjust the signal transmission shaft 132 and drive the pressure detection device 131 to reciprocate along the guide structure 14, so that the pressure detection device 131 can monitor the actual pressure at different positions in the body in a timely manner, and the signal transmission shaft 132 can transmit the detected pressure information to an external active device through the connector 40. In some specific embodiments, the pressure detection device 131 can be, for example, a miniature pressure sensor. The pressure sensor can adopt existing technology, for example, it can be a FOP series optical fiber pressure sensor of FISO.

[0092] In the novel perfusion treatment needle provided in the embodiment of the present invention, the adjustment mechanism is a composite adjustment mechanism 30. Two implementation modes are described below.

[0093] like Figures 1 to 20 In the novel perfusion treatment needle provided in the embodiment of the present invention, Figure 6 , Fig.17 The composite adjustment mechanism 30 includes a connected driving component 31 and a transmission component 32, and the transmission component 32 is connected to the signal transmission shaft 132 at one end away from the driving component 31; the driving component 31 can drive the transmission component 32 to drive the pressure detection device 131 and the signal transmission shaft 132 to reciprocate along the axial extension direction of the guide structure 14. The composite adjustment mechanism 30 is divided into a gear + roller adjustment structure and a gear + rack adjustment mechanism. Among them, the gear + roller adjustment structure is described as the first embodiment. The gear + rack adjustment mechanism is described as the second embodiment.

[0094] In a first embodiment of the present invention, Figures 1 to 12 The description of the puncture needle 10, the needle body 11, the needle tail seat 12, the first hollow cavity 111, the guide structure 14, the pressure detection assembly 13 (the pressure detection device 131 and the signal transmission shaft 132), the connecting piece 122, and the second hollow cavity 121 is the same as before, and the similarities are not repeated. The composite adjustment mechanism 30 is a gear + roller adjustment structure.

[0095] In a first embodiment, if Figure 6 The driving assembly 31 includes a driving part 312 and an adjusting handle 311 sleeved on the driving part 312; the driving part 312 is connected to the transmission assembly 32. Rotating the adjusting handle 311 can drive the driving part 312 to rotate. The adjusting handle 311 is an adjusting wheel, and the driving part 312 can be a spline structure, for example.

[0096] Further, such as Figure 3 , Figure 6 The transmission assembly 32 includes a first transmission part 321, which includes a driving gear shaft 3211, and the extension direction of the driving gear shaft 3211 is parallel to the axial extension direction of the signal transmission shaft 132; the driving part 312 is sleeved on the driving gear shaft 3211, and the driving gear shaft 3211 is also provided with a position driving gear 3212 and a driving driving gear 3213; and also includes a first driven gear 3214, which is meshed with the driving driving gear 3213 for transmission. Preferably, the first driven gear 3214 and the driving driving gear 3213 are bevel gears. The driving part 312 drives the position driving gear 3212 and the driving driving gear 3213 to rotate along the axial direction of the driving gear shaft 3211, and further drives the first driven gear 3214 to rotate.

[0097] Further, such as Figure 3 , Figure 6 The transmission assembly 32 further includes a second transmission part 322 connected to the first transmission part 321; the second transmission part 322 includes a first roller 3221, the first roller 3221 and the first driven gear 3214 are coaxially connected; and further includes a second roller 3222, and the end of the signal transmission shaft 132 away from the puncture needle 10 is arranged between the first roller 3221 and the second roller 3222. The axial direction of the coaxial connection between the first roller 3221 and the first driven gear 3214 is perpendicular to the extension direction of the driving gear shaft 3211. The rotation direction of the second roller 3222 is opposite to the rotation direction of the first roller 3221, thereby driving the signal transmission shaft 132 between the first roller 3221 and the second roller 3222 to reciprocate, thereby driving the signal transmission shaft 132 and the pressure detection device 131 to reciprocate along the axial extension direction of the guide structure 14.

[0098] Preferably, Figure 3 , the first roller 3221 is disposed above the first driven gear 3214 .

[0099] Further, such as Figure 4 The composite adjustment mechanism 30 (gear + roller adjustment structure) also includes a handle housing, which includes an upper handle housing 33 and a lower handle housing 34; the upper handle housing 33 and the lower handle housing 34 are respectively connected to the needle tail seat 12. The adjustment handle 311 can rotate relative to the upper handle housing 33 and the lower handle housing 34. Figure 5 The first roller 3221 and the first driven gear 3214 are arranged on the driven gear shaft 3223, and the driven gear shaft 3223 is installed on the handle lower shell 34. Figure 3The second roller 3222 is disposed on a roller shaft 3224. The roller shaft 3224 is disposed on the handle upper shell 33. The extension directions of the roller shaft 3224 and the driven gear shaft 3223 are parallel.

[0100] Further, such as Figure 4 , Figure 5 , further comprising a connector 40. The signal transmission shaft 132 is electrically connected to the connector 40. Specifically, Figure 6 , Figure 7 The end of the signal transmission shaft 132 away from the puncture needle 10 is connected to the connector 40 through the first cable 381. Thus, the pressure information collected by the pressure detection device 131 is transmitted to the external active device.

[0101] Further, such as Figure 5 , Figure 6 , a sealing member 50 is provided between the needle tail seat 12 and the handle housing. The sealing member 50 can be, for example, a sealing gasket, through which the sealing gasket makes the sealing performance of the handle upper shell 33, the handle lower shell 34 and the needle tail seat 12 better.

[0102] Further, such as Figure 3 , Figure 6 , and also includes a position detection device 35, and a position driven gear 36 meshing with the position driving gear 3212; the position driving gear 3212 drives the position driven gear 36 to rotate, and the position detection device 35 is connected to the position driven gear 36. The position detection device 35 is electrically connected to the connector 40. Among them, the position detection device 35 can be, for example, a rotary sensor, and the position driven gear 36 is installed on the rotating shaft of the rotary sensor. The rotary sensor is connected to the connector 40 through the second cable 382, ​​so as to transmit the axial position information of the rotary sensor to the external active device.

[0103] Optional, such as Figure 1 , Figure 2 The adjustment handle 311 is provided with a scale mark 20 for reflecting the axial position of the pressure detection device 131 .

[0104] Further, such as Figure 4 The handle housing and the adjusting handle 311 are equipped with a first limiting structure 37, and the first limiting structure 37 includes a limiting column 371 and a limiting piece 372. In one embodiment, the limiting column 371 is arranged on the handle upper shell 33, and the limiting piece 372 is arranged on the adjusting handle 311. The limiting column 371 and the limiting piece 372 cooperate to limit the position of the adjusting handle 311.

[0105] Optional, such as Figure 3A second limiting structure 391 is provided between the roller shaft 3224 and the handle upper shell 33. The second limiting structure 391 may be, for example, a retaining spring.

[0106] Optional, such as Figure 3 A third limiting structure 392 is provided between the position driving gear 3212 and the handle upper shell 33. The third limiting structure 392 may be, for example, a retaining spring.

[0107] The working principle of the first embodiment of the present invention is as follows:

[0108] like Figure 7 to Figure 12 When the adjustment handle 311 is rotated, the driving gear shaft 3211 rotates, and drives the first roller 3221 to rotate by driving the driving gear 3213 and the first driven gear 3214, and further drives the signal transmission shaft 132 to move through the first roller 3221 and the second roller 3222, and further drives the pressure detection device 131 to move forward and backward. The rotation angle of the adjustment handle 311 (such as an adjustment wheel) and the driving gear shaft 3211 can be transmitted to the position detection device 35 through the position driving gear 3212 and the position driven gear 36. The pressure information and the position information are respectively transmitted to the connector 40 through the first cable 381 and the second cable 382, ​​and are transmitted to the external active device through the connector 40.

[0109] refer to Figures 13 to 20 In the second embodiment of the present invention, the description of the puncture needle 10, the needle body 11, the needle tail seat 12, the first hollow cavity 111, the guide structure 14, the pressure detection assembly 13 (pressure detection device 131 and signal transmission shaft 132), the connecting member 122, and the second hollow cavity 121 are the same as before, and the similarities are not repeated. The composite adjustment mechanism 30 is a gear + rack adjustment structure.

[0110] In a second embodiment, if Fig.17 The driving assembly 31 includes a connecting driving part 312 and an adjusting handle 311 sleeved on the driving part 312; the driving part 312 is connected to the transmission assembly 32. Rotating the adjusting handle 311 can drive the driving part 312 to rotate. The adjusting handle 311 is an adjusting wheel, and the driving part 312 can be a spline structure, for example.

[0111] Further, such as Fig.17The transmission assembly 32 includes a first transmission part 321, which includes a driving gear shaft 3211, and the extension direction of the driving gear shaft 3211 is parallel to the axial extension direction of the signal transmission shaft 132; the driving part 312 is sleeved on the driving gear shaft 3211, and the driving gear shaft 3211 is also provided with a position driving gear 3212 and a driving driving gear 3213; and also includes a first driven gear 3214, which is meshed with the driving driving gear 3213 for transmission; the first driven gear 3214 and the driving driving gear 3213 are bevel gears. The driving part 312 drives the position driving gear 3212 and the driving driving gear 3213 to rotate along the axial direction of the driving gear shaft 3211, and further drives the first driven gear 3214 to rotate.

[0112] Further, such as Fig.17 The transmission assembly 32 includes a second transmission part 322 connected to the first transmission part 321. The second transmission part 322 also includes a second driven gear 3225, such as Fig.14 , the second driven gear 3225 is coaxially connected to the first driven gear 3214; and further includes a rack 3226 meshing with the second driven gear 3225. The extending direction of the rack 3226 is parallel to the extending direction of the signal transmission shaft 132. The rack 3226 is connected to the signal transmission shaft 132 through a connecting rod 3227. The rack 3226 meshes with the second driven gear 3225, so that the rack 3226 can move a certain distance in its extending direction. Since the extending directions of the signal transmission shaft 132 and the rack 3226 are parallel and connected through the connecting rod 3227, the signal transmission shaft 132 can be driven to move along its axial direction.

[0113] Preferably, Fig.14 , the second driven gear 3225 is arranged above the first driven gear 3214.

[0114] Further, such as Fig.15 , and also includes a second guide seat 3228, the extension direction of the second guide seat 3228 is parallel to the axial extension direction of the signal transmission shaft 132; the rack 3226 and the second guide seat 3228 are respectively provided with matching guide grooves and guide columns 3229; the rack 3226 can be ensured to move in the guide groove, and the rack 3226 can reciprocate along the second guide seat 3228.

[0115] Further, such as Fig.17The composite adjustment mechanism 30 (gear + rack adjustment structure) also includes a handle housing, and the handle housing is symmetrically provided with a handle upper shell 33 and a handle lower shell 34; the handle upper shell 33 and the handle lower shell 34 are respectively connected to the needle tail seat 12. The adjustment handle 311 can rotate relative to the handle upper shell 33 and the handle lower shell 34. Fig.16 The first driven gear 3224 and the second driven gear 3225 are arranged on the driven gear shaft 3223, and the driven gear shaft 3223 is installed on the handle lower shell 34. Fig.15 The second guide seat 3228 is installed on the handle upper shell 33.

[0116] Further, such as Fig.16 , further comprising a connector 40, wherein the signal transmission shaft 132 is electrically connected to the connector 40. Specifically, Fig.17 The end of the signal transmission shaft 132 away from the puncture needle 10 is connected to the connector 40 through the first cable 381. Thus, the pressure information collected by the pressure detection device 131 is transmitted to the external active device.

[0117] Further, such as Fig.16 , Fig.17 A sealing member 50 is provided between the needle tail seat 12 and the handle housing. The sealing member 50 may be, for example, a sealing gasket, through which the sealing property between the handle upper shell 33, the handle lower shell 34 and the needle tail seat 12 is improved.

[0118] Further, such as Fig.17 , and also includes a position detection device 35, and a position driven gear 36 meshing with the position driving gear 3212; the driving gear drives the position driven gear 36 to rotate, and the position detection device 35 is connected to the position driven gear 36. The position detection device 35 is electrically connected to the connector 40. Among them, the position detection device 35 can be, for example, a rotary sensor, and the position driven gear 36 is installed on the rotating shaft of the rotary sensor. The rotary sensor is connected to the connector 40 through the second cable 382, ​​so as to transmit the axial position information of the rotary sensor to the external active device.

[0119] Optional, Fig.13 , Fig.14 A scale mark 20 is provided on the adjustment handle 311 to reflect the axial position of the pressure detection device 131 .

[0120] Further, such as Fig.16The handle housing and the adjusting handle 311 are equipped with a first limiting structure 37, which includes a limiting column 371 and a limiting piece 372. In one embodiment, the limiting column 371 is provided on the handle upper shell 33, and the limiting piece 372 is provided on the adjusting handle 311. The limiting column 371 and the limiting piece 372 cooperate to limit the position of the adjusting handle 311.

[0121] Optional, such as Fig.16 A third limiting structure 392 is provided between the position driving gear 3212 and the handle upper shell 33, and the third limiting structure 392 may be, for example, a retaining spring.

[0122] The working principle of the second embodiment of the present invention is as follows:

[0123] like Fig.18 , Fig.19 , Fig. 20 When the adjustment handle 311 is rotated, the driving gear shaft 3211 rotates, and drives the second driven gear 3225 to rotate by driving the driving gear 3213 and the first driven gear 3224, and further drives the driving signal transmission shaft 132 to move through the second driven gear 3225 and the rack 3226, and further drives the pressure detection device 131 to move forward and backward. The rotation angle of the adjustment handle 311 (such as an adjustment wheel) and the driving gear shaft 3211 can be transmitted to the position detection device 35 through the position driving gear 3212 and the position driven gear 36. The pressure information and the position information are respectively transmitted to the connector 40 through the first cable 381 and the second cable 382, ​​and are transmitted to the external active device through the connector 40.

[0124] In summary, given that the current perfusion dosage, rate and pressure value to be achieved are determined by the surgeon's own experience, there may be problems such as too fast rate, too much or too little dosage, or insufficient pressure value in the catheter treatment section. To achieve skilled and accurate perfusion treatment, doctors need a long time to learn, and it is difficult to achieve normalization and standardization of treatment. The present invention can monitor the actual pressure in the body in a timely manner, and use the actual pressure value as a reference to guide perfusion, which is conducive to solving the above problems, shortening the doctor's learning curve, and promoting normalization and standardization of treatment.

[0125] The present invention can realize intelligentization of the rate and dosage of drug liquid perfusion, avoid large errors in the perfusion rate and dosage caused by the lack of experience of the operator, and promote the standardization of drug liquid perfusion during intracavitary clinical surgery. In addition to being used for perfusion, the invention can also be used as an injection needle in other occasions where pressure detection is required.

[0126] In summary, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0127] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A new type of perfusion treatment needle, characterized in that: The puncture needle (10) comprises a needle body (11) and a needle tail seat (12) connected to each other, the needle body (11) comprising a first hollow cavity (111), a guide structure (14) being provided on the cavity wall of the first hollow cavity (111), the extension direction of the guide structure (14) being parallel to the axial extension direction of the needle body (11); a pressure detection component (13); and an adjustment mechanism for regulating the reciprocating movement of the pressure detection component (13) along the extension direction of the guide structure (14); a connecting piece (122) being provided on the needle tail seat (12); a second hollow cavity (121) being provided in the connecting piece (122), the second hollow cavity (121) being communicated with the first hollow cavity (111); The pressure detection assembly (13) comprises a connected pressure detection device (131) and a signal transmission shaft (132); the pressure detection device (131) is arranged in the first hollow cavity (111), and the pressure detection device (131) is close to the needle tip of the needle body (11); the signal transmission shaft (132) is connected to the adjustment mechanism.

2. The novel perfusion treatment needle according to claim 1, characterized in that: The regulating mechanism is a composite regulating mechanism (30).

3. The novel perfusion treatment needle as claimed in claim 2, characterized in that: The composite adjustment mechanism (30) comprises a connected driving component (31) and a transmission component (32); one end of the transmission component (32) away from the driving component (31) is connected to a signal transmission shaft (132); the driving component (31) can drive the transmission component (32) to drive the pressure detection device (131) and the signal transmission shaft (132) to move back and forth along the axial extension direction of the guide structure (14).

4. The novel perfusion treatment needle as claimed in claim 3, characterized in that: The composite adjustment mechanism (30) further comprises a handle housing; the handle housing comprises an upper handle housing (33) and a lower handle housing (34); the upper handle housing (33) and the lower handle housing (34) are respectively connected to the needle tail seat (12); And / or, the driving assembly (31) comprises a driving portion (312) and an adjustment handle (311) sleeved on the driving portion (312); The driving part (312) is connected to the transmission assembly (32).

5. The novel perfusion treatment needle according to claim 4, characterized in that: The transmission assembly (32) comprises a first transmission part (321), the first transmission part (321) comprises a driving gear shaft (3211), the extension direction of the driving gear shaft (3211) is parallel to the axial extension direction of the signal transmission shaft (132); the driving part (312) is sleeved on the driving gear shaft (3211), the driving gear shaft (3211) is also provided with a position driving gear (3212) and a driving driving gear (3213); and further comprises a first driven gear (3214), the first driven gear (3214) is meshed with the driving driving gear (3213) for transmission; preferably, the first driven gear (3214) and the driving driving gear (3213) are bevel gears.

6. The novel perfusion treatment needle according to claim 5, characterized in that: The transmission assembly (32) comprises a second transmission part (322) connected to the first transmission part (321); the second transmission part (322) comprises a first roller (3221), the first roller (3221) and the first driven gear (3214) are coaxially connected; and further comprises a second roller (3222), and an end of the signal transmission shaft (132) away from the puncture needle (10) is arranged between the first roller (3221) and the second roller (3222); or; The second transmission part (322) includes a second driven gear (3225), which is coaxially connected to the first driven gear (3214); and also includes a rack (3226) meshing with the second driven gear (3225); the extension direction of the rack (3226) is parallel to the extension direction of the signal transmission shaft (132); the rack (3226) is connected to the signal transmission shaft (132) through a connecting rod (3227).

7. The novel perfusion treatment needle according to claim 6, characterized in that: The first roller (3221) and the first driven gear (3214) are arranged on a driven gear shaft (3223), and the driven gear shaft (3223) is installed on the handle lower shell (34); The second roller (3222) is arranged on a roller shaft (3224), and the roller shaft (3224) is arranged on the handle upper shell (33); The extension direction of the driven gear shaft (3223) is parallel to the extension direction of the roller shaft (3224); Or; it also includes a second guide seat (3228), the extension direction of the second guide seat (3228) is parallel to the axial extension direction of the signal transmission axis (132); the rack (3226) and the second guide seat (3228) are respectively provided with matching guide grooves and guide columns (3229); the rack (3226) can move back and forth along the second guide seat (3228).

8. The novel perfusion treatment needle according to claim 5, characterized in that: It also includes a position detection device (35) and a position driven gear (36) meshing with the position driving gear (3212); the position detection device (35) is connected to the position driven gear (36); and it also includes a connector (40); the position detection device (35) is electrically connected to the connector (40).

9. The novel perfusion treatment needle according to claim 4, characterized in that: A sealing member (50) is provided between the needle tail seat (12) and the handle housing; And / or, further comprising a connector (40), wherein the signal transmission shaft (132) is electrically connected to the connector (40); And / or, the handle housing and the adjustment handle (311) are matched with a first limiting structure (37); And / or, the adjustment handle (311) is provided with a scale mark (20).

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