CN211381640U

CN211381640U - Puncture location director under supersound guide

Info

Publication number: CN211381640U
Application number: CN201920273209.3U
Authority: CN
Inventors: 芦苇; 李力; 刘彪
Original assignee: Guihang Anshun Hospital
Current assignee: Guihang Anshun Hospital
Priority date: 2019-03-05
Filing date: 2019-03-05
Publication date: 2020-09-01
Anticipated expiration: 2029-03-05

Abstract

The utility model relates to a puncture location director under supersound guide, include ultrasonic probe (1) and be locating rack (2) of cavity quadrangle shape at least, be provided with first guide rod (21) and second guide rod (22) according to the mode of rotating the connection on locating rack (2), ultrasonic probe (1) can be dismantled between each other with first guide rod (21) and/or second guide rod (22) and be connected, wherein: keep away from first guide bar (21) the one end of locating rack (2) is provided with first position sleeve (23), keep away from second guide bar (22) the one end of locating rack (2) is provided with second position sleeve (24) ultrasonic probe (1) detachably set up in under the circumstances on first position sleeve (23), ultrasonic probe (1) can with first position sleeve (23) with the junction of locating rack (2) carries out circular motion as the axle center.

Description

Puncture location director under supersound guide

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a puncture location director under supersound guide.

Background

The internal medicine is a specialized family of clinical medicine, is the basis of almost all other clinical medicine, and is also called the mother of medicine. The content of internal medicine includes definition of disease, etiology, pathogenesis, epidemiology, natural history, symptom, sign, experimental diagnosis, image examination, differential diagnosis, treatment and prognosis. The method of internal science is to make a physical examination after inquiring or interviewing through the medical history, and to make an experimental diagnosis and an image examination according to the medical history and the examination findings, so as to eliminate the person with lower possibility in a plurality of differential diagnoses and obtain the most possible diagnosis; after diagnosis, the treatment methods of internal medicine include follow-up observation, lifestyle, medicine, interventional therapy (such as cardiac catheter, endoscope), etc., and the use of medicine is adjusted according to the condition of the patient to prevent and treat side effects and complications.

Medical puncturing is an important means of diagnosis and treatment in medicine, and can be broadly divided into diagnostic puncturing and therapeutic puncturing. In recent years, with the progress of the performance of ultrasonic instruments, the improvement of puncture needles and the accumulation of experience of operating doctors, ultrasound-guided puncture has become a very important diagnostic technique, so that many diseases, especially tumor diseases, can be diagnosed clearly in time, and the most important information is provided for the selection of treatment modes of patients, the selection of operation modes and the evaluation and follow-up after treatment in treatment.

Chinese patent (publication No. CN104958095B) discloses an ultrasound-guided lower puncture positioning guide, which comprises an ultrasound probe mounted on a positioning plate, wherein the ultrasound probe is provided with a guide, the positioning plate is provided with a first chute with scales, and a needle sleeve is assembled in the chute; the ultrasonic probe is detachably arranged on the positioning plate. According to the invention, the auxiliary laser positioning equipment is adopted, after the ultrasonic position is determined, the range capable of establishing the puncture needle channel is determined by utilizing the laser positioning equipment, so that the position of the puncture needle channel can be always displayed through the display screen, and a good auxiliary effect is provided for a doctor; the positioning plate structure matched with the probe is arranged and can be matched with the ultrasonic imaging equipment, and under the indication of a puncture target point displayed in a display screen of the imaging equipment, the position of puncture is accurately given by using scales on the positioning plate, so that the puncture process is targeted; the whole set of device can be applied to a plurality of positions on the body surface, and can play a fixed role in the ultrasonic probe, so that the whole puncture process is accurate and simple, and a good puncture effect is achieved. However, this patent has at least the following drawbacks: the puncture position of the unable accurate control pjncture needle of this patent need constantly carry out calibration puncture position through observing the display screen and buckling the pjncture needle in the use, and the use step is loaded down with trivial details and the pjncture needle is buckled and can bring unnecessary injury and pain for the patient, has certain functional defect. Therefore, the technical problem to be solved by the utility model is to overcome the not enough puncture location director under the supersound guide that provides of prior art.

Chinese patent CN208404787U provides a lung puncture fixing frame, which comprises a first base, a first telescopic sleeve rod, a U-shaped frame, a micro motor, a screw rod, a nut seat, a micro electric telescopic rod, a puncture needle clamp, a puncture needle body, a second telescopic sleeve rod and a second base, wherein the first telescopic sleeve rod is arranged on the upper end surface of the first base, the second telescopic sleeve rod is arranged on the upper end surface of the second base, the first telescopic sleeve rod is connected with the second first telescopic sleeve rod through the U-shaped frame, the micro motor is fixed on the upper side of the left end of the U-shaped frame, the screw rod is arranged on the right end surface of the micro motor, the nut seat is arranged on the screw rod, the design is convenient for medical staff to electrically adjust the lung puncture needle to move transversely, the bottom of the nut seat is provided with the micro electric telescopic rod, the bottom of the micro electric telescopic rod is provided with the puncture needle clamp, the, convenient adjustment and high stability.

The use scheme related to a ratchet structure is an existing technical means in the field, for example, Chinese patent with publication number CN205480066U discloses a novel medical device, which is characterized by mainly comprising a fixed shell component (A), a support main body component (B) and a probe fixing component (C), wherein the fixed shell component (A) is connected with a connecting end (B7) of the support main body component (B), the probe fixing component (2) is connected with a cantilever end (B4.2) of the support main body component (B), and the cantilever end (B4.2) of the support main body component (B) is connected with one end of a supporting arm (B4) of the support main body component (B) through a ratchet mechanism; the other end of the supporting arm (B4) is connected with the connecting end of the bracket main body component (B) through another ratchet mechanism, and the distance and the height between the probe component (C) on the cantilever end and the fixed end of the fixed shell component (A) can be realized by adjusting the included angle between the cantilever end (B4.2) and the supporting arm (B4) and the included angle between the supporting arm (B4) and the connecting end. The utility model discloses can fix a position fast and anti-drop, can effectively avoid medical equipment to use because the unexpected medical safety adverse event that drops and injure patient of probe takes place.

SUMMERY OF THE UTILITY MODEL

To prior art not enough, the utility model provides a puncture location director under supersound guide includes ultrasonic probe and the locating rack that is cavity quadrangle at least, be provided with first guide rod and second guide rod according to the mode of rotating the connection on the locating rack, ultrasonic probe can with first guide rod and/or second guide rod can dismantle the connection each other, wherein: the first guide rod is kept away from the one end of locating rack is provided with first position sleeve, the second guide rod is kept away from the one end of locating rack is provided with the second position sleeve ultrasonic probe detachably set up in under the circumstances on the first position sleeve, ultrasonic probe can with first position sleeve with the junction of locating rack carries out circular motion as the axle center.

According to a preferred embodiment, the positioning frame is further provided with a puncture needle, the puncture needle can be detachably connected with the first positioning sleeve and/or the second positioning sleeve, wherein: under the condition that the second positioning sleeve rotates to abut against the first positioning sleeve and forms a fixing channel for fixing the ultrasonic probe and/or the puncture needle, the ultrasonic probe can be detachably arranged on the fixing channel, and under the condition that the fixing channel is provided with the ultrasonic probe, the first guide rod, the second guide rod and the positioning frame can form a triangular auxiliary fixing area for preventing the fixing channel from moving.

According to a preferred embodiment, the positioning frame is provided with a first ratchet portion capable of rotating clockwise and a second ratchet portion capable of rotating anticlockwise, the first ratchet portion and the first guide rod are fixedly connected with each other, and the second ratchet portion and the second guide rod are fixedly connected with each other.

According to a preferred embodiment, the first ratchet part comprises at least a first ratchet wheel and a first pawl, the second ratchet part comprises at least a second ratchet wheel and a second pawl, the first ratchet wheel is in bearing connection with the first pawl in rotation connection with each other, and the second ratchet wheel is in rotation connection with the second pawl in rotation connection with each other.

According to a preferred embodiment, the first ratchet wheel and the first guide rod are fixedly connected with each other, the second ratchet wheel and the second guide rod are fixedly connected with each other, and the first pawl and the second pawl are respectively and fixedly connected with the positioning frame.

According to a preferred embodiment, the puncture needle can be detachably provided on the fixed channel in a state where the ultrasonic probe obtains the puncture point and is taken out from the fixed channel.

According to a preferred embodiment, the puncture needle at least comprises a puncture needle head and a needle tube, the puncture needle head and the needle tube are fixedly connected with each other, the puncture needle head is provided with a U-shaped sealing sleeve, and under the condition that the puncture needle head is wrapped by the sealing sleeve, the needle tip of the puncture needle head abuts against the blind end position of the sealing sleeve.

According to a preferred embodiment, the needle tube further comprises a flow limiting clip for adjusting the flow rate of blood, and the flow limiting clip is movably sleeved outside the needle tube.

According to a preferred embodiment, the current limiting clamp at least comprises a pressing part for operation, a clamping part for clamping the pressing part, a clamping part for clamping/loosening the needle tube and a pipeline through hole for enabling the needle tube to penetrate through the current limiting clamp in a penetrating mode, wherein the pressing part and the clamping part are integrally formed and form an annular structure, the clamping part is arranged in the annular structure, and the pipeline through hole is arranged on the integrally formed pressing part and the clamping part.

According to a preferred embodiment, the first guide rod and the second guide rod are telescopic loop rods with telescopic function.

The utility model discloses have one or more in following beneficial technological effect at least:

(1) the puncture position to the unable accurate control pjncture needle of traditional puncture location bullnose need constantly carry out calibration puncture position through observing the display screen and buckling the pjncture needle in the use, and the use step is loaded down with trivial details and the pjncture needle is buckled and can bring unnecessary injury and pain for the patient, has certain functional defect's problem. The utility model discloses a set up first guide rod and make medical personnel use the utility model discloses the time, medical personnel can be through setting up ultrasonic probe and sheathe in first locating sleeve and rotate first guide rod and be circular motion and detect the patient to carry out accurate positioning puncture coordinate through extension and/or shorten first guide rod, avoid the patient to change too much, puncture route to buckle and cause the health injury because of the puncture angle when having promoted puncture positioning accuracy and puncture effect.

(2) The utility model discloses a set up first position sleeve and second position sleeve and make medical personnel can make first position sleeve and second position sleeve form fixed passage and make in ultrasonic probe can be fixed in fixed passage through rotating the second guide pole after carrying out the accurate positioning puncture coordinate to make ultrasonic probe can generate the internal image of patient and the depth of penetration under stable state, accomplish the puncture needle of unloading it and packing into after the work at ultrasonic probe. Because the fixed channel position does not change, so the pjncture needle can only need can accurate puncture to the target area through control puncture degree of depth based on the image data that ultrasonic probe gathered, avoid the patient to buckle because of puncture angle changes too much, puncture route and cause the health injury when further having guaranteed the puncture effect.

Drawings

FIG. 1 is a simplified structural connection diagram of the puncture positioning guide of the present invention;

FIG. 2 is a simplified structural connection diagram of the fastening region of the present invention;

FIG. 3 is a simplified structural connection diagram of the fixed way of the present invention;

fig. 4 is a simplified structural connection diagram of the first ratchet portion of the present invention;

FIG. 5 is a simplified structural connection diagram of a second ratchet portion according to the present invention;

FIG. 6 is a simplified structural connection diagram of the puncture needle of the present invention; and

fig. 7 is a simplified structural connection diagram of the current-limiting clip of the present invention.

List of reference numerals

1: the ultrasonic probe 2: positioning frame 3: puncture needle

21: first guide lever 22: second guide lever 23: first positioning sleeve

24: second positioning sleeve 25: fixing passage 26: fixing area

27: first ratchet portion 28: second ratchet portion 31: puncture needle head

32: the needle tube 33: sealing sleeve 34: current limiting clamp

41: first ratchet 42: first pawl 43: second ratchet wheel

44: second pawls 71: pressing portion 72: clamping part

73: the clamping portion 74: pipeline via hole

Detailed Description

The following detailed description is made with reference to the accompanying drawings. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The word "module" as used herein describes any type of hardware, software, or combination of hardware and software that is capable of performing the functions associated with the "module".

Example 1

As shown in fig. 1, an ultrasound-guided puncture positioning guide at least comprises an ultrasound probe 1 and a hollow quadrilateral positioning frame 2, the positioning frame 2 is provided with a first guide rod 21 and a second guide rod 22, the ultrasound probe 1 and the first guide rod 21 and/or the second guide rod 22 can be detachably connected with each other, wherein: one end of the first guide rod 21, which is far away from the positioning frame 2, is provided with a first positioning sleeve 23, one end of the second guide rod 22, which is far away from the positioning frame 2, is provided with a second positioning sleeve 24, and under the condition that the ultrasonic probe 1 is detachably arranged on the first positioning sleeve 23, the ultrasonic probe 1 can perform circular motion by taking the joint of the first positioning sleeve 23 and the positioning frame 2 as an axis. Preferably, the first positioning sleeve 23 and the second positioning sleeve can be detachably connected with the ultrasonic probe 1 in a threaded manner. Preferably, the ultrasonic probe 1 may be an ultrasonic probe related to chinese patent publication No. CN104958095B, and is not described in detail again because it belongs to the prior art. Preferably, the ultrasound probe 1 may be provided with a display for use therewith to facilitate viewing by medical personnel. Preferably, the positioning frame 2 can be arranged on the surface of the patient body by means of adhesion and/or vacuum adsorption. Preferably, in the case where the positioning frame 2 is provided on the body surface of the patient, the central region thereof is hollow so that the ultrasonic probe 1 and/or the puncture needle 3 can directly contact the skin of the patient. The puncture position of the puncture needle can not be accurately controlled by the traditional puncture positioning guider, the puncture position needs to be continuously calibrated by observing the display screen and bending the puncture needle in the use process, the use steps are complicated, and unnecessary injury and pain can be brought to a patient by bending the puncture needle, so that certain functional defects are realized. Use at medical personnel the utility model discloses the time, medical personnel can be through setting up ultrasonic probe 1 on first position sleeve 23 and rotate first guide rod 21 and do circular motion and detect the patient to carry out the accurate positioning puncture coordinate through extension and/or shorten first guide rod 21.

According to a preferred embodiment, the positioning frame 2 is further provided with a puncture needle 3, the puncture needle 3 being detachably connectable to the first positioning sleeve 23 and/or the second positioning sleeve 24, wherein: in the case where the second positioning sleeve 24 is rotated to abut against the first positioning sleeve 23 and form the fixing channel 25 for fixing the ultrasonic probe 1 and/or the puncture needle 3, the ultrasonic probe 1 can be detachably disposed on the fixing channel 25, and in the case where the fixing channel 25 is provided with the ultrasonic probe 1, the first guide rod 21, the second guide rod 22, and the positioning frame 2 can form the auxiliary fixing region 26 having a triangular shape for preventing the fixing channel 25 from moving. Preferably, the first and

second positioning sleeves

23, 23 are removably connected to the needle 3 by a threaded connection. The utility model discloses a set up first position sleeve 23 and second position sleeve 24 and make medical personnel can make first position sleeve 23 and second position sleeve 24 form fixed channel 25 and make ultrasonic probe 1 can be fixed in fixed channel 25 through rotating second guide rod 22 after carrying out the accurate positioning puncture coordinate, thereby make ultrasonic probe 1 can generate the internal image of patient and the depth of penetration under stable state, lift it off and pack into pjncture needle 3 after ultrasonic probe 1 accomplishes the work. Because the position of the fixed channel 25 is not changed, the puncture needle 3 can accurately puncture to a target area only by controlling the puncture depth based on the image data acquired by the ultrasonic probe 1, so that the puncture effect is ensured, and the body injury of a patient caused by too much change of the puncture angle and bending of the puncture route is avoided.

According to a preferred embodiment, the positioning frame 2 is provided with a first ratchet portion 27 capable of rotating clockwise and a second ratchet portion 28 capable of rotating counterclockwise, the first ratchet portion 27 and the first guide rod 21 are fixedly connected with each other, and the second ratchet portion 28 and the second guide rod 22 are fixedly connected with each other.

According to a preferred embodiment, the first ratchet part 27 comprises at least a first ratchet wheel 41 and a first pawl 42, the second ratchet part 28 comprises at least a second ratchet wheel 43 and a second pawl 44, the first ratchet wheel 41 being in a bearing connection with the first pawl 42 in rotation with each other, and the second ratchet wheel 43 being in a bearing connection with the second pawl 44 in rotation with each other. Preferably, the first pawl 42 is provided with a spring capable of returning, and when the clockwise rotation of the first ratchet wheel 41 is stopped, the first pawl 42 can engage with the first ratchet wheel 41 in a spring-returning manner. Preferably, the second pawl 44 is provided with a spring that can be returned, and when the counterclockwise rotation of the second ratchet wheel 43 is stopped, the second pawl 44 can engage with the second ratchet wheel 43 in a spring-return manner. Preferably, the first and

second ratchet portions

27, 28 may each be a ratchet of the type referred to in publication CN 202746532U.

According to a preferred embodiment, the first ratchet wheel 41 and the first guide bar 21 are fixedly connected to each other, the second ratchet wheel 43 and the second guide bar 22 are fixedly connected to each other, and the first pawl 42 and the second pawl 44 are fixedly connected to each other, respectively, with the spacer 2.

According to a preferred embodiment, the puncture needle 3 can be detachably provided on the fixed channel 25 in a state where the ultrasonic probe 1 obtains the puncture point and is taken out from the fixed channel 25.

According to a preferred embodiment, the puncture needle 3 at least comprises a puncture needle head 31 and a needle tube 32, the puncture needle head 31 and the needle tube 32 are fixedly connected with each other, the puncture needle head 31 is provided with a sealing sleeve 33 in a U shape, and in the case that the puncture needle head 31 is wrapped by the sealing sleeve 33, the needle tip of the puncture needle head 31 abuts against the blind end position of the sealing sleeve 33. The U-shaped seal sleeve 33 is a shape of a longitudinal section of the seal sleeve 33. The sealing sleeve 33 can seal the puncture needle head 31 so as to avoid blood leakage when the vacuum blood sampling test tube is replaced, when the vacuum blood sampling test tube is inserted, the puncture needle head 31 firstly punctures the sealing sleeve 33 and then is inserted into the vacuum blood sampling test tube, and when the puncture needle head 31 is pulled out, the sealing sleeve 33 elastically recovers to a sealing state, so that the puncture needle head 31 returns to the sealing sleeve 33, and secondary sealing is realized.

According to a preferred embodiment, the needle cannula 32 further includes a flow restriction clip 34 for regulating the flow rate of blood, the clip 34 being removably disposed about the needle cannula 32. Preferably, the flow restriction clip 34 is capable of increasing or decreasing the flow rate of blood in a manner that changes the cross-sectional area of the needle cannula 32 in the event that the piercing needle 31 penetrates the patient. When the needle tube 32 passes through the tube passage hole 74, the medical staff can press the pressing portion 71 to engage with the locking portion 72, thereby reducing the cross-sectional area of the tube passage hole 74 and changing the cross-sectional area of the needle tube 32 at the tube passage hole 74.

According to a preferred embodiment, the current-limiting clamp 34 comprises at least a pressing portion 71 for operation, a clamping portion 72 for clamping the pressing portion 71, a clamping portion 73 for clamping/unclamping the needle tube 32, and a conduit through hole 74 for passing the needle tube 32 through the current-limiting clamp 34 in a penetrating manner, wherein the pressing portion 71 is integrally formed with the clamping portion 72 and forms a ring-shaped structure, the clamping portion 73 is disposed in the ring-shaped structure, and the conduit through hole 74 is disposed on the integrally formed pressing portion 71 and clamping portion 72. Preferably, the clamping part 72 may be provided with a snap groove for engaging with the pressing part 71 so that the pressing part 71 and the clamping part 72 can be fixed to form a ring structure when the snap groove engages with the pressing part 71. Preferably, the outer surface of the pressing portion 71 may be provided with a slip prevention rib for preventing slipping.

According to a preferred embodiment, the first guide rod 21 and the second guide rod 22 are telescopic rods having a telescopic function. The telescopic loop bar belongs to the conventional prior art in the field, and therefore, the description is not repeated.

It should be noted that the above-mentioned embodiments are exemplary, and those skilled in the art can devise various solutions in light of the present disclosure, which are also within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present specification and drawings are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. An ultrasonic-guided puncture positioning guide at least comprises an ultrasonic probe (1) and a positioning frame (2) in a hollow quadrilateral shape, and is characterized in that the positioning frame (2) is provided with a first guide rod (21) and a second guide rod (22) in a rotating connection manner, the ultrasonic probe (1) and the first guide rod (21) and/or the second guide rod (22) can be detachably connected with each other, wherein:

a first positioning sleeve (23) is arranged at one end of the first guide rod (21) far away from the positioning frame (2), a second positioning sleeve (24) is arranged at one end of the second guide rod (22) far away from the positioning frame (2),

under the condition that the ultrasonic probe (1) is detachably arranged on the first positioning sleeve (23), the ultrasonic probe (1) can perform circular motion by taking the joint of the first positioning sleeve (23) and the positioning frame (2) as an axis.

2. An ultrasound-guided puncture positioning guide according to claim 1, characterized in that the positioning frame (2) is further provided with a puncture needle (3), the puncture needle (3) being detachably connectable with the first positioning sleeve (23) and/or the second positioning sleeve (24), wherein:

the ultrasound probe (1) can be detachably arranged on the fixing channel (25) in the case that the second positioning sleeve (24) is rotated to abut against the first positioning sleeve (23) and form a fixing channel (25) for fixing the ultrasound probe (1) and/or the puncture needle (3),

in the case where the fixing channel (25) is provided with the ultrasonic probe (1), the first guide bar (21), the second guide bar (22), and the positioning frame (2) can form an auxiliary fixing region (26) in a triangular shape for preventing the fixing channel (25) from moving.

3. The ultrasound-guided puncture positioning guide according to claim 2, characterized in that the positioning frame (2) is provided with a first ratchet portion (27) capable of clockwise rotation and a second ratchet portion (28) capable of counterclockwise rotation,

the first ratchet part (27) and the first guide rod (21) are fixedly connected with each other, and the second ratchet part (28) and the second guide rod (22) are fixedly connected with each other.

4. The ultrasound-guided lancing positioning guide of claim 3, wherein the first ratchet portion (27) includes at least a first ratchet (41) and a first pawl (42), the second ratchet portion (28) includes at least a second ratchet (43) and a second pawl (44),

the first ratchet wheel (41) is connected with the first pawl (42) in a bearing connection mode in a rotating mode, and the second ratchet wheel (43) is connected with the second pawl (44) in a rotating mode.

5. An ultrasound-guided puncture positioning guide according to claim 4, characterized in that the first ratchet wheel (41) and the first guide rod (21) are fixedly connected to each other, the second ratchet wheel (43) and the second guide rod (22) are fixedly connected to each other,

the first pawl (42) and the second pawl (44) are fixedly connected with the positioning frame (2) respectively.

6. An ultrasound guided puncture positioning guide according to claim 5, characterized in that the puncture needle (3) is detachably provided on the fixed channel (25) in a state where the ultrasound probe (1) obtains a puncture point and is taken out by the fixed channel (25).

7. An ultrasound-guided puncture positioning guide according to claim 6, characterized in that the puncture needle (3) comprises at least a puncture needle head (31) and a needle tube (32), the puncture needle head (31) and the needle tube (32) being fixedly connected to each other,

the puncture needle head (31) is provided with a U-shaped sealing sleeve (33), and under the condition that the puncture needle head (31) is wrapped by the sealing sleeve (33), the needle point of the puncture needle head (31) is abutted to the blind end position of the sealing sleeve (33).

8. The ultrasound-guided puncture positioning guide of claim 7, wherein the needle tube (32) further comprises a flow restriction clip (34) for regulating the flow rate of blood, the flow restriction clip (34) being movably sleeved outside the needle tube (32).

9. The ultrasound-guided puncture positioning guide according to claim 8, wherein the current limiting clip (34) comprises at least a pressing portion (71) for operation, a gripping portion (72) for gripping the pressing portion (71), a clamping portion (73) for clamping/unclamping the needle tube (32), and a tube passing hole (74) for passing the needle tube (32) through the current limiting clip (34) in a penetrating manner,

the pressing portion (71) and the clamping portion (72) are integrally formed and form an annular structure, the clamping portion (73) is arranged in the annular structure, and the pipeline through hole (74) is formed in the pressing portion (71) and the clamping portion (72) which are integrally formed.

10. An ultrasound-guided puncture positioning guide according to claim 9, characterized in that the first guide rod (21) and the second guide rod (22) are telescopic loop rods with telescopic function.