WO2022165852A1 - 一种架体和穿刺支架 - Google Patents

一种架体和穿刺支架 Download PDF

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Publication number
WO2022165852A1
WO2022165852A1 PCT/CN2021/076085 CN2021076085W WO2022165852A1 WO 2022165852 A1 WO2022165852 A1 WO 2022165852A1 CN 2021076085 W CN2021076085 W CN 2021076085W WO 2022165852 A1 WO2022165852 A1 WO 2022165852A1
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WIPO (PCT)
Prior art keywords
connecting plate
frame body
frame
rotating rod
hand
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PCT/CN2021/076085
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English (en)
French (fr)
Inventor
苏州市立普医疗科技有限公司
王沁
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苏州市立普医疗科技有限公司
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Application filed by 苏州市立普医疗科技有限公司 filed Critical 苏州市立普医疗科技有限公司
Priority to PCT/CN2021/076085 priority Critical patent/WO2022165852A1/zh
Publication of WO2022165852A1 publication Critical patent/WO2022165852A1/zh

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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

Definitions

  • the present invention relates to the technical field of puncture equipment, in particular to a frame body and a puncture stent.
  • Ultrasound interventional surgery is a new technology developed on the basis of ultrasonic imaging.
  • an ultrasonic probe puncture bracket needs to be installed on the ultrasonic probe, and then under the precise guidance of the ultrasonic probe puncture bracket, the puncture operation is performed, and the puncture needle can reach the lesion.
  • Surgical operations such as suction, drug administration, and catheter placement can be performed, or fine treatment operations such as microwave, radio frequency, and laser energy can be given.
  • Ultrasound interventional surgery is different from traditional surgical operations. It does not require surgery, and only requires a fine needle puncture to complete. The patient suffers less pain, does not require hospitalization, and is relatively safe, simple to operate, and of high practical value.
  • the frame body of the puncture bracket includes a hoop for tightening the internal ultrasound probe.
  • the hoop generally includes an upper bracket and a lower bracket. One end of the upper bracket body and the lower bracket body is rotatably connected, and the other end is connected by a fixed structure. When used, the fixed structure Open, separate the ends of the upper bracket and the lower bracket, place the in-vivo ultrasound probe in the hoop, and then use the fixing bracket to connect the ends of the upper bracket and the lower bracket, so that the hoop is sleeved on the in-vivo ultrasound probe .
  • screws are generally used for the fixing structure, and the screws need to be screwed and the operation time is long.
  • the invention provides a frame body and a puncture bracket, which can realize the quick connection or quick disconnection between the arch frames, and can quickly complete the operation with one hand, so that the connection operation between the frame body and the intrabody ultrasonic probe is simple and quick.
  • One aspect of the present invention provides a frame body, which is connected end to end by at least two arch frames; the free ends of the arch frames at the first position and the end position are connected by a locking structure to form an annular frame body;
  • the locking structure includes a connecting rod, a rotating rod and a hand position, the first end of the connecting rod is rotatably connected with the rotating rod, the hand position is used to pull the locking structure, and the second end of the connecting rod is connected with the first position of the arch frame, connecting The rod is used to drive the first position of the arch frame to approach or away from the last position of the arch frame, so as to realize the tightening or loosening of the frame body.
  • the hand position is fixedly connected with the outer wall of the rotating rod.
  • the hand position includes a first hand position arm and a second hand position arm, the first end of the first hand position arm is connected with the outer wall of the rotating rod, and the second end is connected with the second hand position arm.
  • the arch frame further includes a first connecting plate and a second connecting plate; the first connecting plate and the second connecting plate are respectively arranged at the last position and the first position of the arch frame; the second end of the connecting rod is connected with the first connecting plate.
  • the two connecting plates are connected in rotation.
  • the connection between the first end of the first hand arm and the rotating rod is in contact with the first connecting plate, or when the frame body is in a tightened state, it rotates.
  • the rod is in contact with the first connecting plate.
  • the first hand arm has a first abutment surface, and when the rotating rod is in contact with the first connecting plate, the first abutment surface is used to abut on the outer surface of the arched frame.
  • the arched frame is provided with a raised fulcrum, and the connection between the first end of the first hand arm and the rotating rod is in contact with the first connecting plate.
  • the fulcrum on the arch frame is in contact with the groove.
  • the second hand position arm has a second abutting surface, and the second abutting surface is used for surface abutting on the outer surface of the arched frame.
  • a side of the first connecting plate away from the second connecting plate is provided with an arc-shaped groove
  • a puncture stent comprising the above-mentioned frame body.
  • the locking structure drives the first position of the arched frame to move, and when the first position of the arched frame is tightened to the last position, the frame body clamps the internal ultrasonic probe.
  • the quick connection or quick disconnection between the arch brackets can be realized, and the operation can be quickly completed with one hand, so that the connection operation between the bracket body and the intrabody ultrasound probe is simple and quick.
  • FIG. 1 is a schematic structural diagram of a frame body provided by an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of a frame provided by an embodiment of the present invention.
  • FIG. 3 is a side view of another state of the frame body provided by the embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a puncture stent provided by an embodiment of the present invention.
  • 21 first connecting plate; 22: second connecting plate; 23: connecting rod; 24: rotating rod; 25: hand position; 26: arc groove; 27: first rotating shaft; 28: second rotating shaft; 29: groove; 212: fulcrum; 251: first-hand arm; 252: second-hand arm.
  • a plurality of arch frames can be connected by the locking structure, thereby forming a ring-shaped closed frame body.
  • the first connecting plate and the second connecting plate can be connected together.
  • Quick connection or quick disconnection the operation can be completed quickly with one hand, so that the connection operation between the frame body and the intrabody ultrasound probe is simple and quick, and the following is the specific description.
  • FIG. 1 is a schematic structural diagram of a frame body provided by an embodiment of the present invention
  • FIG. 2 is a cross-sectional view of the frame body provided by an embodiment of the present invention.
  • the frame body includes at least two arch frames 1 , and the ends of the plurality of arch frames 1 are connected end to end in sequence to form an annular frame body; the ends of at least one set of arch frames 1 They are connected by a locking structure 2;
  • the locking structure 2 includes a locking device, the locking device includes a connecting rod 23, a rotating rod 24 and a hand position 25, the first end of the connecting rod 23 is rotatably connected with the rotating rod 24, and the hand position 25 is used for
  • the second end of the connecting rod 23 is connected with the first position of the arched frame 1, and the connecting rod 23 is used to drive the first position of the arched frame 1 to approach or away from the last position of the arched frame 1, so as to realize the frame body.
  • the first and last positions of the arch frame 1 further include a first connecting plate 21 and a second connecting plate 22, wherein the second connecting plate 22 is connected to the first position of the arch frame 1, and the first connecting plate 21 connected with the end position of the arched frame 1; the second end of the connecting rod 23 is connected with the second connecting plate 22, and the second end of the connecting rod 23 drives the second connecting plate 22 to move between the first position and the second position (ie The approach or distance between the first and last positions), so as to realize the tightening or loosening of the adjacent arches 1.
  • the locking structure 2 includes two states when in use, namely a locked state and an unlocked state.
  • the locked state the distance between the first connecting plate 21 and the second connecting plate 22 is the smallest, that is, when the second connecting plate 22 is in the second position, in this state, the arch 1 can clamp the outer wall of the ultrasonic probe in the body . Since the locking device abuts on the first connecting plate 21, the force exerted by the locking device on the second connecting plate 22 can be maintained, so that the second connecting plate 22 can be kept in the second position, and the contact of the frame body to the intra-body ultrasound probe can be maintained. clamping force.
  • the locking device In the unlocked state, the locking device is pulled to release the abutment state with the first connecting plate 21, and the second connecting plate 22 returns to the original first position without the restraint of the holding force. , the arch frame 1 can be opened to take out the intrabody ultrasound probe.
  • the locking device includes a connecting rod 23 and a rotating rod 24, the axis of the connecting rod 23 and the axis of the rotating rod 24 are perpendicular to each other; the first end of the connecting rod 23 is rotatably connected with the rotating rod 24, and the second The end is rotatably connected with the second connecting plate 22 .
  • the rotating rod 24 is in the shape of a cam, the middle of the rotating rod 24 is provided with a gap, and the gap is provided with a first rotating shaft 27 arranged along the axis of the frame body.
  • the axis of the first rotating shaft 27 is parallel to the axis of the rotating rod 24 and has a limited distance.
  • the first connecting plate 21 and the second connecting plate 22 include a plate body, the first end of the plate body is vertically connected with the outer wall of the arch frame 1, the second end of the plate body is provided with a gap, and the gap of the second connecting plate 22 is provided with an inner wall.
  • the vertical projection of the first connecting plate 21 to the direction of the second connecting plate 22 coincides with the second connecting plate 22 .
  • connection rod 23 Two ends of the connecting rod 23 are respectively provided with through holes, and the first rotating shaft 27 and the second rotating shaft 28 are respectively penetrated through the through holes, so as to be rotatably connected with the connecting rod 23; the outer diameter of the connecting rod 23 is not larger than the first connecting plate 21, The width of the notch on the second connecting plate 22 and the rotating rod 24 .
  • the rotating rod 24 is first placed on the first connecting plate 21.
  • the second connecting plate 22 is not moved to the second position, but is located at the first position and the Between the second positions, or at the first position; it is necessary to continue to rotate the rotating rod 24 to move the second connecting plate 22 . Since the axis of the first rotating shaft 27 does not coincide with the axis of the rotating rod 24, the rotating rod 24 continues to be rotated to rotate the first rotating shaft 27 to a position away from the first connecting plate 21. When the first rotating shaft 27 reaches a distance from the first connecting plate When the furthest position of 21 is reached, the second connecting plate 22 is lifted to the second position.
  • the axis of the first rotating shaft 27 is located near the peripheral surface of the rotating rod 24, so that the defined distance between the axis of the first rotating shaft 27 and the axis of the rotating rod 24 is the rotating rod 24, the limiting distance is close to the radius of the rotating rod 24, that is to say, setting the limiting distance as large as possible can make the frame body clamp the intra-body ultrasound probe more tightly.
  • FIG. 3 is a side view of another state of the frame body provided by the embodiment of the present invention.
  • the locking device further includes a hand position 25 , and the hand position 25 is fixedly connected with the outer wall of the rotating rod 24 .
  • the rotating rod 24 is rotated, by manually pushing the hand position 25 upward, the rotating operation of the rotating rod 24 can be realized, thereby realizing the effect of "turning up” and locking.
  • the arch frame 1 is locked by the locking device, so that the frame body can be adapted to ultrasonic probes of different diameters.
  • the distance between the first rotating shaft 27 and the first connecting plate 21 is the smallest (or smaller), and the inner diameter of the annular structure enclosed by the arched frame 1 is larger at this time.
  • the position of the first rotating shaft 27 is gradually increased, thereby reducing the diameter of the annular structure.
  • the rotating rod 24 cannot continue to rotate, that is, the first rotating shaft 27 cannot continue to be rotated.
  • Raised at this time, it means that the frame body is tightly connected with the ultrasonic probe of the current diameter. In this way, the frame body can be adapted to ultrasonic probes of different diameters.
  • FIG. 2 in the figure, the distance between the first rotating shaft 27 and the first connecting plate 21 is the largest, and the diameter of the ultrasonic probe adapted to the annular structure enclosed by the arch frame 1 is the smallest in this state.
  • the first abutting surface of the first hand position arm 251 of the position is abutted on the outer surface of the arched frame 1 . As shown in FIG. 1 and FIG.
  • an arc-shaped groove 26 is provided on the first connecting plate 21, and the rotating rod 24 is placed in the arc-shaped groove 26 and can be rotated in the arc-shaped groove 26, so that the rotating rod 24 can be rotated. It plays a limiting role to prevent the rotating rod 24 from falling off from the first connecting plate 21 .
  • the locking device when the frame body is adapted to an ultrasonic probe with a specified diameter, the locking device can be lifted for a certain distance and then abutted on the first connecting plate 21. At this time, the first connecting plate 21 is under the action of the locking device. The movement is restricted so as to limit the distance between the first connecting plate 21 and the second connecting plate 22 within a fixed distance, that is, the frame body can hold the ultrasonic probe whose diameter is adapted to it.
  • the second abutting surface of the second hand arm 252 is abutted on the outer wall of the channel structure 4 , so that the locking is more stable, and situations such as misoperation and triggering are less likely to occur.
  • a groove 29 can also be provided between the first hand arm 251 and the rotating rod 24 , the arch frame 1 is provided with a raised fulcrum 212 , and the first end of the first hand arm 251 and the When the connection of the rotating rod 24 is in contact with the first connecting plate 21, the fulcrum 212 on the arch frame 1 is in contact with the groove 29, and the groove 29 and the fulcrum 212 can be used to further limit the position of the hand to avoid the hand position and the arch.
  • the frame 1 can be separated at will.
  • the frame body includes two arched frames 1 , one end of the two arched frames 1 is rotatably connected, and the other end is connected by a locking structure 2 .
  • One end of the arch frame 1 is rotatably connected, and the break can be freely rotated, but cannot be separated.
  • One end of the locking structure 2 includes two states of locking and unlocking. The end arch frame 1 can be separated, which is convenient for the frame body and the in vivo ultrasound. Probe connection.
  • FIG. 4 is a schematic structural diagram of a puncture stent provided by an embodiment of the present invention. As shown in FIG. 4 , another aspect of the embodiment of the present invention further provides a puncture stent, which includes a frame body, a locking structure 2 and a needle threading structure 3 .

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Abstract

一种架体和穿刺支架，该架体由至少两个拱形架(1)逐个首尾连接；位于首位和末位的拱形架(1)的自由端之间通过锁紧结构(2)连接从而形成环形的架体；锁紧结构(2)包括连接杆(23)、转动杆(24)和手位(25)，连接杆(23)的第一端与转动杆(24)转动连接，手位(25)用于扳动锁紧结构(2)，连接杆(23)的第二端与拱形架(1)的首位连接，连接杆(23)用于带动拱形架(1)的首位接近或远离拱形架的末位，从而实现架体的收紧或松驰。采用该架体，单手即可快速完成锁紧结构(2)的连接或解除连接操作，从而使架体和体内超声探头的连接操作简单快捷。

Description

一种架体和穿刺支架 技术领域
本发明涉及穿刺设备技术领域，特别地涉及一种架体和穿刺支架。
背景技术
超声介入手术是在超声影像的基础上发展起来的新技术，手术中需要在超声探头上安装超声探头穿刺支架，然后在超声探头穿刺支架的精准引导下，进行穿刺操作，穿刺针可直达病灶，可进行抽吸、给药、置管等手术操作，或者给予微波、射频、激光能量等精细治疗操作。超声介入手术不同于传统的外科手术，其无需开刀，只需要一个细针穿刺就可以完成，患者痛苦较小，无需住院，并且相对安全，操作简单，实用价值比较高。
穿刺支架的架体包括用于套紧体内超声探头的抱箍，抱箍一般包括上支架和下支架，上架体和下架体的一端转动连接，另一端通过固定结构连接，使用时，固定结构打开，上支架和下支架的端部分离，将体内超声探头置于抱箍内，然后，再利用固定支架将上支架和下支架的端部连接，从而将抱箍套接在体内超声探头上。
现有技术中，固定结构一般使用螺钉，螺钉需要旋拧操作，操作时间长，而且，对于医护人员来说，手术时由于佩戴橡胶手套，并不方便进行旋拧操作，因此，现有的固定结构打开和闭合操作较为不便。
发明内容
本发明提供了一种架体和穿刺支架，可实现拱形架之间的快速连接或快速解除连接，单手即可快速完成操作，从而使架体和体内超声探头的连接操作简单快捷。
本发明的一个方面，提供了一种架体，由至少两个拱形架逐个首尾连接；位于首位和末位的拱形架的自由端之间通过锁紧结构连接从而形成环形的架体；锁紧结构包括连接杆、转动杆和手位，连接杆的第一端与转动杆转动连接，手位用于扳动锁紧结构，连接杆的第二端与拱形架的首位连接，连接杆用于带动拱形架的首位接近或远离拱形架的末位，从而实现所述架体的收紧或松驰。
可选地，手位与转动杆的外壁固定连接。
可选地，手位包括第一手位臂和第二手位臂，第一手位臂的第一端与转动杆的外壁连接，第二端与第二手位臂连接。
可选地，拱形架还包括第一连接板和第二连接板；第一连接板和第二连接板分别设置在所述拱形架的末位和首位；连接杆的第二端与第二连接板转动连接。
可选地，所述架体呈收紧状态时，第一手位臂的第一端和转动杆的连接处与第一连接板抵接，或者，所述架体呈收紧状态时，转动杆与第一连接板抵接。
可选地，第一手位臂上具有第一贴合面，转动杆与第一连接板抵接时，所述第一贴合面用于贴合在拱形架的外表面上。
可选地，第一手位臂与转动杆之间具有凹槽，拱形架上设有凸起的支点，第一手位臂的第一端和转动杆的连接处与第一连接板抵接时，拱形架上的支点与凹槽相抵。
可选地，第二手位臂上具有第二贴合面，所述第二贴合用于面贴合在拱形架的外表面上。
可选地，第一连接板远离第二连接板的一侧设有弧形凹槽；连接杆或第一手位臂与连接杆的连接处与弧形凹槽抵接。
本发明的另一个方面，还提供了一种穿刺支架，包括上述架体。
本发明提供的技术方案中，锁定结构带动拱形架的首位移动，当拱形架的首位向末位收紧时，架体夹紧体内超声波探头。通过锁紧结构可实现拱形支架之间的快速连接或快速解除连接，单手即可快速完成操作，从而使架体和体内超声探头的连接操作简单快捷。
附图说明
为了说明而非限制的目的，现在将根据本发明的优选实施例、特别是参考附图来描述本发明，其中：
图1为本发明实施方式提供的架体的结构示意图；
图2为本发明实施方式提供的架体的剖视图；
图3为本发明实施方式提供的架体另一种状态的侧视图；
图4为本发明实施方式提供的穿刺支架的结构示意图。
图中：
1：拱形架；2：锁紧结构；3：穿针结构；4：通道结构；
21：第一连接板；22：第二连接板；23：连接杆；24：转动杆；25：手位；26：弧形凹槽；27：第一转轴；28：第二转轴；29：凹槽；212：支点；251：第一手位臂；252：第二手位臂。
具体实施方式
本发明实施方式提供的架体和穿刺支架，利用锁紧结构可将多个拱形架连接，从而形成环形闭合的架体，锁紧结构操作时，可将第一连接板和第二连接板快速连接或快速解除连接，单手即可快速完成操作，从而使架体和体内超声探头的连接操作简单快捷，以下进行具体说明。
图1为本发明实施方式提供的架体的结构示意图；图2为本发明实施方式提供的架体的剖视图。如图1和图2所示，架体包括至少两个拱形架1，多个拱形架1的端部依次首尾连接，从而形成环形的架体；至少一组拱形架1的端部之间通过锁紧结构2连接；锁紧结构2包括锁定装置，锁定装置包括连接杆23、转动杆24和手位25，连接杆23的第一端与转动杆24转动连接，手位25用于扳动锁紧结构，连接杆23的第二端与拱形架1的首位连接，连接杆23用于带动拱形架1的首位接近或远离拱形架1的末位，从而实现架体的收紧或松驰。本发明实施方式中，拱形架1的首位和末位还包括第一连接板21和第二连接板22，其中，第二连接板22与拱形架1的首位连接，第一连接板21与拱形架1的末位连接；连接杆23的第二端与第二连接板22连接，连接杆23的第二端带动第二连接板22在第一位置和第二位置间移动(即首位和末位之间的接近或远离)，从而实现相邻拱形架1的收紧或松驰。
如图1和图2所示，锁紧结构2使用时包括两种状态，分别为锁紧状态和解除锁紧状态。锁紧状态时，第一连接板21和第二连接板22之间的间距最小，即第二连接板22位于第二位置时，此状态下，拱形架1可夹紧体内超声波探头的外壁。由于锁定装置抵接在第一连接板21上，可使用保持锁定装置对第二连接板22施加的作用力，从而使第二连接板22保持在第二位置，保持架体对体内超声探头的夹紧力。解除锁紧状态下，扳动锁定装置，使其解除与第一连接板21的抵接状态，在没有保持力约束的情况下，第二连接板22恢复到起始的第一位置，此时，可将拱形架1打开，以取出体内超声探头。
如图1和图2所示，锁定装置包括连接杆23和转动杆24，连接杆23的轴线与转动杆24的轴线相互垂直；连接杆23的第一端与转动杆24转动连接，第二端与第二连接板22转动连接。转动杆24呈凸轮状，转动杆24的中部设有缺口，缺口内设有沿架体轴线方向设置的第一转轴27，第一转轴27的轴线和转动杆24的轴线平行，且具有限定距离，连接杆23的第一端与第一转轴27转动连接。第一连接板21和第二连接板22包括 板体，板体的第一端与拱形架1的外壁垂直连接，板体的第二端设有缺口，第二连接板22的缺口内设有沿架体轴线方向设置的第二转轴28，连接杆23的第二端与第二转轴28转动连接；拱形架1的端部连接时，第一连接板21和第二连接板22平行设置，且第一连接板21向第二连接板22方向的垂直投影与第二连接板22重合。连接杆23两端分别设有通孔，第一转轴27和第二转轴28分别穿设于通孔上，从而与连接杆23转动连接；连接杆23的外径不大于第一连接板21、第二连接板22和转动杆24上缺口的宽度。
在进行锁紧操作时，先将转动杆24置于第一连接板21上，此时，作为起始状态，第二连接板22并未被移动至第二位置，而是位于第一位置和第二位置之间，或者位于第一位置；需要继续旋转转动杆24来移动第二连接板22。由于第一转轴27的轴线与转动杆24的轴线非重合，因此继续旋转转动杆24，将第一转轴27旋转至远离第一连接板21的位置，当第一转轴27达到距离第一连接板21的最远位置时，第二连接板22被提升至第二位置。
继续参考图1和图2，如图所示，第一转轴27的轴线位于转动杆24的周面附近，从而使第一转轴27的轴线和转动杆24的轴线之间的限定距离为转动杆24的半径，限定距离接近转动杆24的半径，也就是说将限定距离设置得尽可能大，可使架体对体内超声探头夹持的更紧。
图3为本发明实施方式提供的架体另一种状态的侧视图。如图1至图3所示，锁定装置还包括手位25，手位25与转动杆24的外壁固定连接。旋转转动杆24时，通过手动的向上推手位25，即可实现转动杆24的旋转操作，进而实现“上翻”锁紧的效果。
本发明实施方式中，通过锁定装置锁紧拱形架1，可使架体适配不同直径的超声探头。适配不同直径的超声探头操作时，起始状态下，第一转轴27距离第一连接板21的距离最小(或较小)，此时拱形架1围成的环 形结构的内径较大，随着转动杆24的转动，逐渐的将第一转轴27的位置提高，进而缩小环形结构的直径，当环形结构抱紧超声探头时，转动杆24无法继续转动，即第一转轴27无法继续被提高，此时，说明架体与当前直径的超声探头连接紧固。此方式可实现架体适配不同的直径的超声探头。如图2所示，图中，第一转轴27距离第一连接板21的距离最大，此状态拱形架1围成的环形结构适配的超声探头的直径最小，另外，当前状态下，手位的第一手位臂251的第一贴合面贴合在拱形架1的外表面上。如图1和图2所示，在第一连接板21上设置弧形凹槽26，转动杆24置于弧形凹槽26内，可在弧形凹槽26转动，从而可对转动杆24起限位作用，避免转动杆24由第一连接板21上脱落。
本发明实施方式中，架体适配指定直径的超声探头操作时，可将锁定装置提升一段距离后，抵接在第一连接板21上，此时，第一连接板21在锁定装置作用下被限制移动，从而限定第一连接板21和第二连接板22之间在固定距离内，即架体可抱紧与其直径相适配的超声探头。
如图3所示，按压手位25，使第一手位臂251与转动杆24的连接处(该处呈圆形倒角结构)抵接在第一连接板21上，当第一连接板21上设置有弧形凹槽26时，第一手位臂251与转动杆24的连接处抵接在弧形凹槽26内，并且，第二手位臂252贴合在通道结构4的外壁上。此连接状态，仅适配指定直径的超声探头，可实现架体与超声探头的快速拆装连接，另外，第一手位臂251与转动杆24的连接处抵接在第一连接板21，第二手位臂252的第二贴合面贴合在通道结构4的外壁上，使得锁定更加稳定，不易出现误操作触发等状况。本发明实施方式中，还可在第一手位臂251与转动杆24之间设置凹槽29，拱形架1上设有凸起的支点212，第一手位臂251的第一端和转动杆24的连接处与第一连接板21抵接时，拱形架1上的支点212与凹槽29相抵，利用凹槽29和支点212可进一步对手位进行限位，避免手位与拱形架1随意分离。
本发明实施方式中，如图1所示，架体包括两个拱形架1，两个拱形 架1的一端转动连接，另一端通过锁紧结构2连接。拱形架1的一端转动连接，该断可自由转动，但不能分离，锁紧结构2一端包括锁紧和解除锁紧两状态，该端拱形架1可分离，进行便于架体与体内超声探头连接。
图4为本发明实施方式提供的穿刺支架的结构示意图。如图4所示，本发明实施方式的另一个方面，还提供一种穿刺支架，穿刺支架包括架体，以及锁紧结构2和穿针结构3。
上述具体实施方式，并不构成对本发明保护范围的限制。本领域技术人员应该明白的是，取决于设计要求和其他因素，可以发生各种各样的修改、组合、子组合和替代。任何在本发明的精神和原则之内所作的修改、等同替换和改进等，均应包含在本发明保护范围之内。

Claims (10)

  1. 一种架体，其特征在于，由至少两个拱形架(1)逐个首尾连接；
    位于首位和末位的拱形架(1)的自由端之间通过锁紧结构(2)连接从而形成环形的架体；锁紧结构(2)包括连接杆(23)、转动杆(24)和手位(25)，连接杆(23)的第一端与转动杆(24)转动连接，手位(25)用于扳动锁紧结构，
    连接杆(23)的第二端与拱形架(1)的首位连接，连接杆(23)用于带动拱形架(1)的首位接近或远离拱形架(1)的末位，从而实现所述架体的收紧或松驰。
  2. 根据权利要求1所述的架体，其特征在于，手位(25)与转动杆(24)的外壁固定连接。
  3. 根据权利要求1所述的架体，其特征在于，手位(25)包括第一手位臂(251)和第二手位臂(252)，第一手位臂(251)的第一端与转动杆(24)的外壁连接，第二端与第二手位臂(252)连接。
  4. 根据权利要求3所述的架体，其特征在于，拱形架(1)还包括第一连接板(21)和第二连接板(22)；
    第一连接板(21)和第二连接板(22)分别设置在所述拱形架(1)的末位和首位；
    连接杆(23)的第二端与第二连接板(22)转动连接。
  5. 根据权利要求4所述的架体，其特征在于，所述架体呈收紧状态时，第一手位臂(251)的第一端和转动杆(24)的连接处与第一连接板(21)抵接，
    或者，
    所述架体呈收紧状态时，转动杆(24)与第一连接板(21)抵接。
  6. 根据权利要求5所述的架体，其特征在于，第一手位臂(251)上具有第一贴合面，转动杆(24)与第一连接板(21)抵接时，所述第一贴合面用于贴合在拱形架(1)的外表面上。
  7. 根据权利要求5所述的架体，其特征在于，第二手位臂(252)上具有第二贴合面，所述第二贴合用于面贴合在拱形架(1)的外表面上。
  8. 根据权利要求7所述的架体，其特征在于，第一手位臂(251)与转动杆(24)之间具有凹槽(29)，拱形架(1)上设有凸起的支点(212)，第一手位臂(251)的第一端和转动杆(24)的连接处与第一连接板(21)抵接时，拱形架(1)上的支点(212)与凹槽(29)相抵。
  9. 根据权利要求4所述的架体，其特征在于，第一连接板(21)远离第二连接板(22)的一侧设有弧形凹槽(26)；
    连接杆(23)或第一手位臂(251)与连接杆(23)的连接处与弧形凹槽抵接。
  10. 一种穿刺支架，其特征在于，包括如权利要求1至9中任一项所述的架体。
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