CN113440231B - Ultrasonic puncture instrument capable of rotating for sampling - Google Patents
Ultrasonic puncture instrument capable of rotating for sampling Download PDFInfo
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- CN113440231B CN113440231B CN202111017490.2A CN202111017490A CN113440231B CN 113440231 B CN113440231 B CN 113440231B CN 202111017490 A CN202111017490 A CN 202111017490A CN 113440231 B CN113440231 B CN 113440231B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3415—Trocars; Puncturing needles for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/04—Endoscopic instruments
- A61B2010/045—Needles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
- A61B2017/3413—Needle locating or guiding means guided by ultrasound
Abstract
The invention relates to an ultrasonic puncture instrument capable of rotatably sampling, which comprises a puncture needle tube with an inclined puncture head, an outer sleeve on the outer side of the puncture needle tube, and an operation part for controlling a puncture needle and the outer sleeve; the operating part is a tubular operating part and comprises an operating section I for controlling the movement of the outer sleeve, an operating section II for controlling the movement of the puncture needle and a middle section for connecting the operating section I and the operating section II; the operation section I and the middle section are in a combined mode of stretching and locking, and the operation section II and the middle section are also in a combined mode of stretching and locking; a rotation control structure capable of realizing the rotation of the puncture needle tube is arranged in the operation section II; and a locking structure for controlling the action of the locking rotation control structure is arranged. Through the switching of operation locking structure, the action of control rotation control structure, control rotation control structure rotates the rotatory action that realizes the puncture needle pipe, and then realizes the rotary control to the front end puncture syringe needle, finally can realize the tissue sample under the minimum tissue injury prerequisite.
Description
Technical Field
The invention belongs to the technical field of medical instruments, particularly relates to an ultrasonic puncture instrument used in ultrasonic endoscopy, and particularly relates to an ultrasonic puncture instrument capable of rotatably sampling.
Background
Ultrasonic Endoscope (EUS) is a digestive tract examination technology combining endoscope and ultrasound, a miniature high-frequency ultrasonic probe is arranged at the top end of the endoscope, after the endoscope is inserted into a body cavity, when the endoscope directly observes digestive tract mucous membrane lesion, real-time scanning can be carried out by utilizing ultrasound under the endoscope, histological characteristics of the hierarchical structure of the gastrointestinal tract and ultrasound images of surrounding adjacent visceral organs can be obtained, and therefore diagnosis level of the endoscope and ultrasound is further improved.
The ultrasonic endoscope is provided with a forceps channel, an ultrasonic puncture instrument can enter an inspection position through the forceps channel, the ultrasonic puncture instrument is provided with an outer sheath tube and a puncture needle, the puncture needle is extended out when the ultrasonic endoscope enters the vicinity of the inspection position, and tissue sampling is carried out or a drainage channel is established through a pipeline of the puncture needle. The existing puncture needles have two types, one type is a single-bevel puncture head which has less tissue acquisition amount but can be applied to the establishment of a drainage channel; the other is a serrated piercing head, which can obtain enough tissue but cannot be used to establish a drainage channel.
Therefore, the inventor provides an ultrasonic puncture instrument capable of rotatably sampling, which has two functions of obtaining enough tissues and establishing a drainage channel.
Disclosure of Invention
To overcome the problems noted in the background, the present invention provides an ultrasonic puncture instrument that can rotatably sample.
An ultrasonic puncture instrument capable of rotating for sampling comprises a puncture needle tube with an inclined puncture head, an outer sleeve on the outer side of the puncture needle tube, and an operation part for controlling the puncture needle and the outer sleeve; the operating part is a tubular operating part and comprises an operating section I for controlling the movement of the outer sleeve, an operating section II for controlling the movement of the puncture needle and a middle section for connecting the operating section I and the operating section II; the operation section I and the middle section are in a combined mode of stretching and locking, and the operation section II and the middle section are also in a combined mode of stretching and locking; the first end of the operation section is connected with the outer sleeve, and the second end of the operation section is connected with the middle section; the first end of the second operation section is connected with the middle section, and a position fixing structure for realizing the relative position movement change between the rear section puncture needle tube and the second operation section is arranged in the second operation section; the puncture needle tube passes through the first operation section, the middle section and the second operation section and passes through the long outer sleeve; the rear end of the puncture needle tube extends out of a second end of the operation section; a rotation control structure capable of realizing the rotation of the puncture needle tube is arranged in the operation section II; and a locking structure for controlling the action of the locking rotation control structure is arranged. The advancing and withdrawing operations of the outer sleeve can be realized through the arrangement of the operation section I and the middle section, and after the position of the outer sleeve is adjusted, the extending and withdrawing control of the puncture needle can be realized through the arrangement of the operation section II and the middle section; through the switching of operation dead lock structure, the action of control rotation control structure, control rotation control structure rotates the rotatory action that realizes the puncture needle pipe, and then realizes the rotary control to the front end puncture syringe needle, and then has realized the purpose of rotatory sample, can realize the tissue sample under the minimum tissue injury prerequisite.
Preferably, the puncture needle tube section in the second operation section comprises a spiral section and a moving section; the middle of the spiral section is provided with a puncture needle tube; the rotation control structure includes: the spiral section of the puncture needle pipe section in the operation section II and an operation column which is sleeved on the spiral section and is provided with a spiral notch corresponding to the spiral of the spiral section; the puncture needle tube is arranged in the spiral section, the moving section is arranged in the spiral section, the small gap for the puncture needle tube to pass through is arranged on the annular partition plate, and the annular partition plate is integrally connected with the operating section II; the operating column is also provided with a cylindrical notch corresponding to the puncture needle tube; the operation column extends out of the operation handle, and two side walls of the operation section are provided with longitudinal groove bodies for the operation handle to extend out and move.
Preferably, the ratio of the pitch of the helix to the diameter of the helix within the helical section is greater than 3, preferably greater than 5; the arrangement can ensure a larger thread pitch, realize the downward pressing movement of the operation column and further drive the rotation of the spiral section.
Preferably, the cylindrical gap of the operating column is larger than that of the puncture needle tube, and the spiral gap is larger than the thread section, so that the whole device is convenient to adapt and control.
Preferably, the annular partition plate is provided with a circular guide notch with the consistent diameter of the spiral section, so that the tail end of the spiral section can rotate in the guide notch.
Preferably, the contact section of the tail end of the spiral section and the guide notch is set to be a round angle structure, so that the rotation resistance is reduced.
Or, set up the ball at spiral section end and guide notch contact section, the ball sets up and can effectively reduce more and set up the resistance.
Preferably, the locking structure is a locking structure for locking the rotating motion at will, and the setting part of the locking structure is an initial section of the operating column or a structure for locking the spiral section at will by pressing.
Preferably, the locking structure is arranged at the initial section of the operating handle, and specifically, a protruding locking plate is arranged at a position corresponding to the initial section of the operating handle; the locking plate and the operating handle are provided with structures which are attached or attracted with each other.
Preferably, the locking plate and the operating handle are provided with corresponding magnetic attraction pieces, locking is achieved through the magnetic attraction effect of the magnetic attraction pieces, and the operating handle is pushed down forcibly to achieve separation.
Preferably, the surface of the operating handle, which is in contact with the dead locking plate, is larger than the corresponding contact surface of the dead locking plate, so that the operation is more convenient.
Or, correspond on lock death plate and the operating handle and set up easily detached adhesion layer, set up lock death plate and rotate the groove, realize the separation on adhesion layer through rotating lock death plate, push down the operating handle after the separation and realize rotating the sample.
Preferably, the locking structure is a pressing locking structure, is arranged at the initial section of the operating column, and comprises a round notch arranged on the initial section of the operating column and a locking rod extending into the round notch; a moving groove for the movement of the locking rod and a locking spring for keeping the locking rod to enter the round notch are arranged at two corresponding positions of the operating section; the first end of the locking rod extends into the moving groove, the second end of the locking rod is connected with a traction line, the traction line is connected with a pressing traction structure, the pressing traction structure comprises a pressing button, the pressing button is pressed to one side to be in a traction unlocking state, and the pressing button is pressed to the other side to be in a reset locking state.
Preferably, the press button comprises a setting cavity arranged on the second operation section, a press part is arranged in the setting cavity, the center of the press part extends out of the cylindrical groove, and a moving column arranged at the top of the ball at the front end is arranged in the cylindrical groove; a limiting spring is arranged in a cylindrical groove at the first end of the movable column, an arc-shaped concave is arranged at the second end of the movable column, and the arc-shaped concave is also arranged at the corresponding position of the center of the pressing part; and horizontal extension plates are arranged at two ends of the arc-shaped recess; the extension plate is connected with a traction line; a supporting seat which does not influence the swinging of the arc-shaped recess is arranged below the arc-shaped recess. The movable column moves in the arc-shaped recess through the left-right swinging pressing part, so that the arc-shaped recess swinging action is realized, when one section of the arc-shaped recess connecting traction rope is lifted, the locking rod is driven to leave the circular notch, the unlocking is realized, when the traction rope swings to the other side, the traction force is eliminated, and the locking state is recovered under the restoring force of the locking spring.
Preferably, the moving groove comprises two sections, one section is a moving groove section, the other section is a spring groove section, and the diameter of the spring section is larger than that of the moving section;
preferably, the second end of the dead locking rod is arranged at the anti-disengagement section corresponding to the size of the spring groove section, so that the smooth operation of the whole structure is ensured.
Preferably, the second end of the first operating section extends into the first moving cavity at the first end of the middle section, and a first anti-falling ring is arranged at the tail end of the second end of the first operating section and is in close contact with the first moving cavity, so that relative movement is realized under the action of external force.
Preferably, the size is arranged on the outer side of the first operation section, the first display ring is arranged on the middle section, the first display notch is arranged at the position, corresponding to the size, of the first display ring, and the telescopic size is read through the first display notch, so that the situation that the outer sleeve enters the retracting state can be conveniently known.
Preferably, a locking screw I is arranged on the outer side of the display ring I and used for locking the position relation.
Preferably, a notch is arranged at the end head of the first end of the first operation section, an expansion ring extending into the notch is arranged at the first end of the outer sleeve, and a locking cap which is sleeved outside the expansion ring and is locked to form the position relation between the notch and the expansion ring is arranged.
Preferably, the outer side of the locking cap is arranged on lines anastomotic with the orifice of the forceps.
Preferably, the second end of the middle section extends into the second moving cavity of the second operating section; and the tail end of the second end of the middle section is provided with a second anti-falling ring, and the second anti-falling ring is tightly contacted with the second moving cavity to realize relative movement under the action of external force.
Preferably, the size is arranged on the outer side of the middle section, a second display ring is arranged on the second operation section, a second display notch is arranged at the position of the second display ring corresponding to the size, and the stretching size can be read through the second display notch, so that the stretching condition of the puncture needle can be conveniently known.
Preferably, a second locking screw is arranged on the outer side of the display ring and used for locking the position relation.
Preferably, the fixing structure comprises a fixing cavity for fixing the position of the puncture needle tube arranged at the tail end of the second end of the operation section, a fixing ring which is arranged in the fixing cavity and integrally connected with the puncture needle tube, the fixing effect of the position is realized in the fixing cavity by arranging the fixing ring, and the fixing ring can rotate in the fixing cavity.
Preferably, the end of the puncture needle tube is provided with a blocking cap to prevent liquid from seeping out through the needle tube.
When the endoscope is used, the outer sleeve is only required to be sent into an operation position according to the direction of an ultrasonic endoscope forceps channel, then the anastomosis fixation of the forceps channel opening is realized through the lines of the locking cap, and then under the action of the ultrasonic endoscope, the accurate position entering is realized through controlling the telescopic relation of the operation section I, the middle section and the operation section II; and the locking structure is unlocked afterwards, the operation handle is pressed to move downwards to realize the rotation of the spiral section, so that the whole puncture needle tube is driven to rotate, and the sufficient rotating sampling process of the inclined needle head is realized.
The invention has the beneficial effects that: whole apparatus structural design is reasonable, and convenience simple to use, when need not the sample, the dead rotatory section of lock can normally puncture, and puncture needle tubing puncture operation section two can establish effectual negative pressure passageway through puncture needle tubing moreover, and the sample of need is that the unblock lock is dead can rotatory the sample.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a longitudinal sectional view of the operating portion of the present invention;
FIG. 3 is a schematic view of a portion of the spiral section and the operating column of the present invention;
FIG. 4 is a schematic view of a part of the construction of the operation column of the present invention;
FIG. 5 is a schematic view of an operation structure end of the operation portion according to the present invention;
FIG. 6 is a longitudinal sectional view of the operation structure end of the operation portion of the present invention;
FIG. 7 is a schematic view of the cross-sectional structure of the operation structure along the longitudinal slot and the structure of the locking plate according to the present invention;
FIG. 8 is a cross sectional view of the operation portion pressing locking structure of the present invention;
FIG. 9 is a partial enlarged cross-sectional structural schematic view of a push lock structure of the present invention;
FIG. 10 is a schematic longitudinal sectional view of the first operative segment of the present invention at the junction with the intermediate segment;
FIG. 11 is a schematic longitudinal sectional view of the junction between the second operating section and the middle section of the present invention;
in the figure, 1, a puncture needle tube; 2. an outer sleeve; 31. an operation section I; 32. an operation section II; 33. a middle section; 41. a helical section; 42. a moving section; 43. an operating column; 431. a helical notch; 432. a cylindrical notch; 44. an annular spacer plate; 441. a guide notch; 45. an operating handle; 46. a longitudinal groove body; 51. locking the plate; 52. a magnetic attraction sheet; 61. a round notch; 62. a locking lever; 621. an anti-drop section; 631. a moving trough section; 632. a spring slot section; 64. locking the spring; 65. a pulling wire; 661. providing a cavity; 662. a pressing part; 663. a cylindrical groove; 664. moving the column; 665. a limiting spring; 666. arc-shaped concave; 667. an extension plate; 668. a supporting seat; 71. a first moving cavity; 72. a first anti-drop ring; 73. displaying a ring I; 74. displaying a first gap; 75. locking the first screw; 76. arranging a notch; 77. a swelling ring; 78. locking the cap; 81. a second moving cavity; 82. a second anti-drop ring; 83. displaying a ring II; 84. displaying a second gap; 85. locking a second screw; 91. a fixed cavity; 92. a fixing ring; 93. and (4) a plugging cap.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below by specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and other advantages and effects of the present invention can be easily understood by those skilled in the art from the disclosure of the present specification. The present invention can be implemented or applied by other different specific embodiments, and the features in the following embodiments and embodiments can be combined with each other without conflict, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Example 1
Referring to fig. 1-2, an ultrasonic puncture instrument capable of sampling by rotation comprises a puncture needle tube 1 with an inclined puncture head, an outer sleeve 2 outside the puncture needle tube 1, and an operation part for controlling the puncture needle and the outer sleeve 2; the operating part is a tubular operating part and comprises a first operating section 31 for controlling the movement of the outer sleeve 2, a second operating section 32 for controlling the movement of the puncture needle and a middle section 33 for connecting the first operating section 31 and the second operating section 32; the first operation section 31 and the middle section 33 are in a combined mode of stretching and locking, and the second operation section 32 and the middle section 33 are also in a combined mode of stretching and locking; the first end of the operation section I31 is connected with the outer sleeve 2, and the second end is connected with the middle section 33; the first end of the second operation section 32 is connected with the middle section 33, and a position fixing structure which can prevent the relative position of the rear section puncture needle tube 1 and the second operation section 32 from moving and changing is arranged in the second operation section 32; the puncture needle tube 1 passes through the first operation section 31, the middle section 33 and the second operation section 32 and passes through the long outer sleeve 2; the rear end of the puncture needle tube 1 extends out of the second end of the first operation section 31; a rotation control structure capable of realizing the rotation of the puncture needle tube 1 is arranged in the second operation section 32; and a locking structure for controlling the action of the locking rotation control structure is arranged. The advancing and retracting operations of the outer sleeve 2 can be realized through the arrangement of the first operating section 31 and the middle section 33, and the extending and retracting control of the puncture needle can be realized through the arrangement of the second operating section 32 and the middle section 33 after the position of the outer sleeve 2 is adjusted; through the switching of operation locking structure, the action of control rotation control structure, control rotation control structure rotates and realizes the rotary motion to puncture needle tubing 1, and then realizes the rotary control to the front end puncture syringe needle, and then has realized the purpose of rotatory sample, can realize the tissue sample under the minimum tissue injury prerequisite.
Referring to fig. 6, the fixing structure includes a fixing cavity 91 provided at the end of the second end of the operation section 32 for fixing the position of the puncture needle tube 1, a fixing ring 92 provided in the fixing cavity 91 and integrally connected to the puncture needle tube 1, and the fixing ring 92 is disposed in the fixing cavity 91 for fixing the position, and the fixing ring 92 can rotate in the fixing cavity 91. The puncture needle tube 1 is provided with a sealing cap 93 at the end thereof to prevent the liquid from leaking out through the needle tube.
Example 2
Referring to fig. 2 to 4, a rotation control structure is provided on the basis of embodiment 1, specifically: the section of the puncture needle tube 1 in the second operation section 32 comprises a spiral section 41 and a moving section 42; the middle of the spiral section 41 is provided with a puncture needle tube 1; the rotation control structure includes: the spiral section 41 of the puncture needle tube section in the operation section II and the operation column 43 which is sleeved on the spiral section 41 and is provided with a spiral notch 431 corresponding to the spiral of the spiral section 41; the puncture needle tube device also comprises an annular partition plate 44 arranged between the spiral section 41 and the moving section 42, wherein a small notch for the puncture needle tube 1 to pass through is arranged on the annular partition plate 44, and the annular partition plate 44 is integrally connected with the second operation section; the operating column 43 is also provided with a cylindrical notch 432 corresponding to the puncture needle tube 1; the operating column 43 extends out of the operating handle 45, and a longitudinal groove body 46 for extending and moving the operating handle 45 is arranged on the side wall of the second operating section 32. The ratio of the pitch of the helix within the helical section 41 to the diameter of the helix is greater than 1; this arrangement ensures a large pitch, allowing the operating post 43 to be pushed down and moved, thereby driving the rotation of the screw section 41. The cylindrical notch 432 of the operating column 43 is larger than that of the puncture needle tube 1, and the spiral notch 431 is larger than the thread section, so that the whole matching and the control are convenient. The annular partition plate 44 is provided with a circular guide notch 441 with a consistent diameter of the spiral section 41, so that the end of the spiral section 41 can rotate in the guide notch 441.
Example 3
The locking structure is defined on the basis of the embodiment 2, and specifically comprises the following steps: the locking structure is arranged at the initial section of the operating handle 45, and specifically, a protruding locking plate 51 is arranged at the corresponding position of the initial section of the operating handle 45; the locking plate 51 and the operation lever 45 are configured to be attached to or attracted to each other. The locking plate 51 and the operating handle 45 are provided with corresponding magnetic attraction pieces 52, locking is realized through the magnetic attraction effect of the magnetic attraction pieces 52, and the operating handle 45 is pushed down by force to realize separation. The surface of the operating lever 45 that contacts the locking plate 51 is larger than the corresponding contact surface of the locking plate 51, which facilitates the operation.
Or, referring to fig. 7, an adhesive layer which is easy to separate is correspondingly arranged on the locking plate 51 and the operating handle 45, a rotating groove of the locking plate 51 is arranged, the adhesive layer is separated by rotating the locking plate 51, and the operating handle 45 is pressed down after separation to realize rotating sampling.
Example 4
Referring to fig. 5, 8 and 9, another push-to-lock structure is provided on the basis of embodiment 2, specifically, the push-to-lock structure is a push-to-lock structure, which is provided at the initial section of the operating column 43, and includes a circular notch 61 provided at the initial section of the operating column 43, and a lock rod 62 extending into the circular notch 61; a moving groove for moving the locking rod 62 and a locking spring 64 for keeping the locking rod 62 to enter the round notch 61 are arranged at the position corresponding to the second operating section 32; the first end of the locking rod 62 extends into the moving groove, the second end of the locking rod 62 is connected with a pulling wire 65, the pulling wire 65 is connected with a pressing pulling structure, the pressing pulling structure comprises a pressing button, the pressing button is pressed to one side to be in a pulling unlocking state, and the pressing button is pressed to the other side to be in a resetting locking state. The press button comprises a setting cavity 661 arranged on the second operation section, a press part 662 is arranged in the setting cavity 661, the center of the press part 662 extends out of a cylindrical groove 663, and a moving column 664 arranged at the top of a sphere at the front end is arranged in the cylindrical groove 663; a limiting spring 665 is arranged in a column groove 663 at the first end of the moving column 664, an arc-shaped concave 666 is arranged at the second end of the moving column 664, and the arc-shaped concave 666 is also arranged at the corresponding position of the center of the pressing part 662; and two ends of the arc-shaped concave 666 are provided with horizontal extension plates 667; the extension plate 667 is connected with the pulling line 65; a supporting seat 668 which does not influence the swing of the arc-shaped recess 666 is arranged below the arc-shaped recess 666. Move the activity of post 664 in concave 666 of arc and then realize the concave 666 swing action of arc through the left and right sides swing portion 662, when concave 666 of arc connects one section of pulling rope and lifts up, drive dead lock pole 62 and leave circular notch, realize the unblock, pulling force eliminates when swinging to the opposite side, resumes the dead lock state under the restoring force of dead lock spring 64. The moving slot comprises two sections, one section is a moving slot section 631, the other section is a spring slot section 632, and the diameter of the spring section is larger than that of the moving section 42; the second end of the locking rod 62 is disposed on the anti-falling section 621 corresponding to the spring groove section 632 in size, so as to ensure smooth operation of the whole structure.
Example 5
The structure for reducing the friction force of the tail end of the spiral section 41 is arranged on the basis of the embodiment 2-4, and specifically comprises the following steps: the contact section of the tail end of the spiral section 41 and the guide notch 441 is set to be a round angle structure, so that the rotation resistance is reduced.
Or, the ball is arranged at the contact section of the tail end of the spiral section 41 and the guide notch 441, so that the arrangement resistance can be reduced more effectively.
Example 6
Referring to fig. 10 and 11, the expansion and locking modes of the first operation section 31, the second operation section 32 and the middle section 33 are defined on the basis of the embodiments 1-5, specifically:
the second end of the first operating section 31 extends into the first moving cavity 71 at the first end of the middle section 33, a first anti-falling ring 72 is arranged at the tail end of the second end of the first operating section 31, and the first anti-falling ring 72 is tightly contacted with the first moving cavity 71 and realizes relative movement under the action of external force. The size is set at the outer side of the first operation section 31, the first display ring 73 is arranged on the middle section 33, the first display gap 74 is arranged at the position of the first display ring 73 corresponding to the size, and the telescopic size is read through the first display gap 74, so that the situation that the outer sleeve 2 enters the retraction state can be conveniently known. And a locking screw I75 is arranged outside the display ring I73 and used for locking the position relation.
The first end of the first operation section 31 is provided with a notch 76, the first end of the outer sleeve 2 is provided with an expanding ring 77 extending into the notch 76, and a locking cap 78 which is sleeved outside the expanding ring 77 and locks the notch 76 and the expanding ring in position relation. The outer side of the locking cap 78 is arranged on the lines for anastomosis of the forceps opening.
The second end of the middle section 33 extends into the second moving cavity 81 of the second operating section 32; and the second anti-slip ring 82 is arranged at the tail end of the second end of the middle section 33, and the second anti-slip ring 82 is tightly contacted with the second moving cavity 81 to realize relative movement under the action of external force. The size is arranged on the outer side of the middle section 33, the second display ring 83 is arranged on the second operation section 32, the second display notch 84 is arranged at the position of the second display ring 83 corresponding to the size, and the telescopic size is read through the second display notch 84, so that the extending condition of the puncture needle can be conveniently known. And a second locking screw 85 is arranged outside the second display ring 83 and used for locking the position relation.
The above description of the embodiments is only for the understanding of the present invention. It should be noted that modifications could be made to the invention without departing from the principle of the invention, which would also fall within the scope of the claims of the invention.
Claims (10)
1. An ultrasonic puncture instrument capable of rotatably sampling comprises a puncture needle tube with an inclined puncture head, an outer sleeve on the outer side of the puncture needle tube, and an operation part for controlling the puncture needle tube and the outer sleeve; the puncture needle tube is characterized in that the operating part is a tube-shaped operating part and comprises an operating section I for controlling the movement of the outer sleeve, an operating section II for controlling the movement of the puncture needle tube and a middle section for connecting the operating section I and the operating section II; the operation section I and the middle section are in a combined mode of stretching and locking, and the operation section II and the middle section are also in a combined mode of stretching and locking; the first end of the operation section is connected with the outer sleeve, and the second end of the operation section is connected with the middle section; the first end of the second operation section is connected with the middle section, and a position fixing structure for realizing the relative position movement change between the rear section puncture needle tube and the second operation section is arranged in the second operation section; the puncture needle tube passes through the first operation section, the middle section and the second operation section and passes through the long outer sleeve; the rear end of the puncture needle tube extends out of a second end of the operation section; a rotation control structure capable of realizing the rotation of the puncture needle tube is arranged in the operation section II; a locking structure for controlling the action of the locking rotation control structure is arranged; the puncture needle pipe section in the operation section II comprises a spiral section and a moving section; the middle of the spiral section is provided with a puncture needle tube; the rotation control structure includes: the spiral section of the puncture needle pipe section in the operation section II and an operation column which is sleeved on the spiral section and is provided with a spiral notch corresponding to the spiral of the spiral section; the puncture needle tube is arranged in the spiral section, the moving section is arranged in the spiral section, the small gap for the puncture needle tube to pass through is arranged on the annular partition plate, and the annular partition plate is integrally connected with the operating section II; the operating column is also provided with a cylindrical notch corresponding to the puncture needle tube; the operation column extends out of the operation handle, and two side walls of the operation section are provided with longitudinal groove bodies for the operation handle to extend out and move.
2. The ultrasonic puncture instrument capable of sampling by rotation according to claim 1, wherein the ratio of the pitch of the spiral thread in the spiral section to the diameter of the spiral is greater than 1, the cylindrical notch of the operating column is larger than that of the puncture needle tube, and the spiral notch is larger than that of the spiral section; the annular partition plate is provided with a circular guide notch with the diameter consistent with that of the spiral section.
3. The ultrasonic puncture instrument capable of sampling by rotation according to claim 2, wherein the contact section of the spiral section end and the guide notch is provided with a rounded structure, or the contact section of the spiral section end and the guide notch is provided with a ball.
4. The ultrasonic puncture instrument capable of rotatably sampling according to claim 1, wherein the locking structure is any locking structure for locking the rotational motion, and the setting part of the locking structure is an initial section of the operation column or a structure for pressing the locking spiral section.
5. The ultrasonic puncture instrument capable of rotatably sampling according to claim 1, wherein the locking structure is a push-to-lock structure, which is disposed at the initial section of the operation column, and comprises a circular notch disposed at the initial section of the operation column, and a locking rod extending into the circular notch; a moving groove for the movement of the locking rod and a locking spring for keeping the locking rod to enter the round notch are arranged at two corresponding positions of the operating section; the first end of the locking rod extends into the moving groove, the second end of the locking rod is connected with a traction line, the traction line is connected with a pressing traction structure, the pressing traction structure comprises a pressing button, the pressing button is pressed to one side to be in a traction unlocking state, and the pressing button is pressed to the other side to be in a reset locking state;
the pressing button comprises a setting cavity arranged on the second operation section, a pressing part is arranged in the setting cavity, the center of the pressing part extends out of the cylindrical groove, and a moving column arranged at the top of the ball at the front end is arranged in the cylindrical groove; a limiting spring is arranged in a cylindrical groove at the first end of the movable column, an arc-shaped concave is arranged at the second end of the movable column, and the arc-shaped concave is also arranged at the corresponding position of the center of the pressing part; and horizontal extension plates are arranged at two ends of the arc-shaped recess; the extension plate is connected with a traction line; a supporting seat which does not influence the swinging of the arc-shaped recess is arranged below the arc-shaped recess.
6. The ultrasonic puncture instrument capable of rotatably sampling according to claim 1, wherein the second end of the operation section extends into the first moving cavity at the first end of the middle section, and a first anti-slip ring is arranged at the end of the second end of the operation section, and the first anti-slip ring is in close contact with the first moving cavity to realize relative movement under the action of external force.
7. The ultrasonic puncture instrument capable of rotating for sampling according to claim 6, wherein the first operation section is provided with a size at the outer side, the first display ring is provided on the middle section, and the first display gap is provided at the position of the first display ring corresponding to the size.
8. The ultrasonic puncture instrument capable of rotating for sampling according to claim 7, wherein the second end of the middle section extends into the second moving cavity of the second operation section; and the tail end of the second end of the middle section is provided with a second anti-falling ring, and the second anti-falling ring is tightly contacted with the second moving cavity to realize relative movement under the action of external force.
9. The ultrasonic puncture device capable of sampling by rotation according to any one of claims 1 to 8, wherein the fixing structure comprises a fixing cavity for fixing the position of the puncture needle tube arranged at the end of the second end of the operation section, and a fixing ring integrally connected with the puncture needle tube and arranged in the fixing cavity.
10. A rotary sampling ultrasonic puncture device according to any of claims 1-8, wherein the puncture needle tube is provided with a plugging cap at its distal end.
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| CN202111017490.2A CN113440231B (en) | 2021-09-01 | 2021-09-01 | Ultrasonic puncture instrument capable of rotating for sampling |
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| CN202111017490.2A CN113440231B (en) | 2021-09-01 | 2021-09-01 | Ultrasonic puncture instrument capable of rotating for sampling |
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| CN113440231B true CN113440231B (en) | 2021-12-21 |
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| CN205163193U (en) * | 2011-11-16 | 2016-04-20 | 柯惠有限合伙公司 | Aspiration biopsy device |
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| CN113440231A (en) | 2021-09-28 |
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