CN207270371U - B-ultrasound central venous puncture auxiliary device - Google Patents

Abstract

The utility model belongs to Sonography devices technical field, more particularly to a kind of B-ultrasound central venous puncture auxiliary device.Its convenient accurate, easy to puncture position adjustment B-ultrasound central venous puncture auxiliary device.Including ultrasonic probe mounting bracket and couplant box, the ultrasonic probe mounting bracket and couplant box detachable connection；The two neighboring side of ultrasonic probe mounting bracket is each provided with a puncture supporter, the puncture supporter and ultrasonic probe mounting bracket detachable connection.After the ultrasonic probe mounting bracket is connected with couplant box, below each puncture supporter, the bottom of couplant box lateral wall is respectively provided with one and is adapted to arc positioning groove into puncture needle.The inner wall surrounding of the couplant box is provided with a circle rubber seal, and the rubber seal is equipped with the couplant injection hole for being used for injecting couplant.

Description

Ultrasound guided central venous access assist device

technical field

The utility model belongs to the technical field of ultrasonic inspection equipment, in particular to an ultrasonic-guided central vein puncture auxiliary device.

Background technique

Ultrasonic examination has the characteristics of non-invasiveness, repeatability and accuracy, so it has been widely used in clinical practice. There are also obvious advantages in vascular puncture and other aspects, especially in recent years, the number of patients who need to establish central venous access has gradually increased, including patients with renal failure and poisoning who need blood purification, tumor patients who need chemotherapy, etc. Ultrasound is known as "visible". stethoscope" played a key role.

However, at present, in ultrasound-guided central vein puncture (mainly jugular vein and femoral vein), the probe of the ultrasound machine is often used to check the corresponding position on the body surface first, and then mark the target blood vessel on the skin surface after finding the target blood vessel to be punctured. , and then remove the probe, disinfect the local skin and puncture along the previously made marks, and do not operate under real-time monitoring. Sometimes due to local pressure, changes in the patient's position, anesthesia and other factors, the course of the blood vessels changes slightly, and the puncture will fail, often requiring repeated positioning and puncture. Moreover, after each positioning, it needs to be re-sterilized and then punctured, which increases the work difficulty of the clinician and the pain of the patient. In order to increase the scientificity and accuracy of central venous puncture, an auxiliary device is needed to assist clinicians in the whole process of central venous puncture under "direct vision".

Contents of the invention

The utility model aims at the defects existing in the prior art, and provides an ultrasonic-guided central vein puncture auxiliary device which is convenient, accurate, and convenient for puncture position adjustment.

In order to achieve the above purpose, the utility model adopts the following technical scheme, including an ultrasonic probe mounting frame and a coupling agent box, the ultrasonic probe mounting frame and the coupling agent box are detachably connected; the adjacent two sides of the ultrasonic probe mounting frame are each A puncture frame is provided, and the puncture frame is detachably connected with the ultrasonic probe installation frame.

After the ultrasonic probe mounting frame is connected to the couplant box, an arc-shaped positioning groove suitable for a puncture needle is provided under each puncture frame and on the bottom of the outer wall of the couplant box.

A rubber sealing ring is arranged around the inner wall of the couplant box, and a couplant injection hole for injecting couplant is provided on the rubber sealing ring.

As a preferred solution of the present invention, the bottom of the couplant box is made of polyurethane material with a thickness of 0.05-0.15 mm.

As another preferred solution of the present utility model, the upper end of the puncture frame is provided with an arc-shaped hole, the front end of a positioning rod passes through the arc-shaped hole and is connected to the upper part of the puncture limit tube, and the rear end of the positioning rod is locked with the limit by a screw thread. The knob is connected; the lower end of the puncture limit tube is axially connected with the lower end of the puncture frame.

As another preferred solution of the present utility model, a marking tube is also provided. When in use, the marking tube passes through the puncture limit tube, and the upper end of the marking tube is provided with a handle; the outer diameter of the marking tube is less than The inner diameter of the puncture limiting tube, the outer diameter of the handle of the marking tube is greater than the inner diameter of the puncture limiting tube.

As another preferred solution of the present utility model, the ultrasonic probe mounting frame is provided with a puncture frame slot, and the puncture frame is provided with a block that is used in conjunction with the slot to achieve snap-in; the puncture frame slot A locking knob for strengthening the connection of the card slot and the block is also arranged on the top.

As another preferred solution of the present invention, the mounting frame is a rectangular frame; one end of the long side of the rectangular frame is connected to the short side of one side through a rotating shaft, and the other end is provided with a locking notch; The locking notch is connected with the short side of the other side, and the rear end of the locking rod is connected with the locking knob through threads.

As another preferred solution of the present utility model, the short side of the rectangular frame is provided with a mounting bracket slot, and the coupling agent box is a rectangular box-shaped structure, and the inner wall of the short side of the rectangular box-shaped structure is provided with a coupling agent Box clamping block: the rectangular frame and the rectangular box-shaped structure are clamped through the clamping slot and the clamping block.

As another preferred solution of the present invention, the longitudinal section of the couplant box block is a right-angled trapezoid, and when the couplant box block is arranged on the inner surface of the couplant box, the hypotenuse side of the right-angled trapezoid faces the side of the couplant box. Open your mouth.

Compared with the prior art, the utility model has beneficial effects.

The utility model can precisely control the puncture angle when performing ultrasonic puncture on a patient, and can operate under almost direct vision, with small error and high success rate, and reduces the work difficulty of medical personnel.

The utility model is provided with a positioning groove on two adjacent sides of the coupling agent box. When the target blood vessel is selected by ultrasound, the groove is just above the target blood vessel. Try to press the local skin at the same angle, observe the changes of blood vessels after pressure with ultrasound, and determine the best puncture direction and angle. Then tighten the locking knob of the arc-shaped hole, and insert the needle for anesthesia and puncture along the determined direction and angle. During the anesthesia and puncture process, the ultrasonic probe is not removed, which is equivalent to directly looking at the target blood vessel and operating under the puncture needle. The two adjacent sides of the couplant box are each provided with a positioning groove, and the clinician can make the ultrasound probe perpendicular to the target blood vessel (when the groove on the longer side is used for positioning), or make the ultrasound probe parallel to the target blood vessel (when using the groove on the longer side). When positioning the groove on the shorter side), especially when the position of the ultrasound probe is limited due to puncture of local anatomical structures or lesions, this device provides two options for increased flexibility.

The utility model sets the marking tube and the positioning groove to guide the puncture, which is different from the puncture guiding tube in the existing device. The anesthesia/puncture needle required by the latter is relatively long, the puncture direction is mechanically fixed, and it must be inserted after the guide wire is inserted. This auxiliary device was removed and the operating procedure was added. This design does not require a special lengthened puncture needle, which increases the flexibility of the needle insertion angle, and can monitor the movement of the target blood vessel, anesthesia needle, puncture needle, guide wire, and central venous catheter throughout the entire puncture process.

The ultrasonic probe described in the utility model is an acoustic-electric conversion device that converts high-frequency electrical energy into ultrasonic mechanical energy and radiates outward, and receives ultrasonic echoes to convert acoustic energy into electrical energy. It is an important factor determining the performance of the instrument, so it cannot be used clinically If the probe is directly in contact with the skin, it is easy to affect the image quality due to wear and tear. Apply coupling agent between the probe and the skin, on the one hand to protect the probe, and on the other hand to fill the gap between the probe and the skin to improve the imaging clarity.

Description of drawings

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. The scope of protection of the utility model is not limited to the expression of the following content.

Fig. 1 is the connection diagram of the utility model.

Figure 2-3 is a schematic diagram of the overall structure of the utility model.

Fig. 4 is a schematic cross-sectional view of the couplant box when the utility model is in use.

In the figure, 1 is the ultrasonic probe mounting frame, 2 is the locking notch, 3 is the locking lever, 4 is the mounting bracket slot, 5 is excessive chamfering, 6 is the couplant box block, 7 is the rubber sealing ring, 8 is the coupling agent injection hole, 9 is the ultrasonic probe, 10 is the slot of the puncture frame, 11 is the block of the puncture frame, 12 is the marking tube, 13 is the arc hole, 14 is the puncture limit tube, 15 is the puncture frame, 16 Is the couplant box, 17 is the arc positioning groove, and 18 is the couplant.

Detailed ways

As shown in Figures 1-4, the utility model includes an ultrasonic probe mounting frame and a coupling agent box, and the ultrasonic probe mounting frame is detachably connected to the coupling agent box; two adjacent sides of the ultrasonic probe mounting frame are respectively provided with a The puncture frame is detachably connected with the ultrasonic probe installation frame.

After the ultrasonic probe mounting frame is connected to the couplant box, an arc-shaped positioning groove suitable for entering a puncture needle is provided under each puncture frame and on the bottom of the outer wall of the couplant box; the arc-shaped positioning groove is a blind Hole structure, the puncture limit tube is projected on the outer wall, and the arc-shaped positioning groove is on the same line as the projection axis. When the marker tube is extended out of the puncture limit tube, it can ensure that the marker tube can be extended into the arc-shaped positioning The groove can ensure that the position of the arc-shaped positioning groove is suitable for entering the marking tube and the needle tube.

A rubber sealing ring is arranged around the inner wall of the couplant box, and a couplant injection hole for injecting couplant is provided on the rubber sealing ring. The rubber sealing ring can prevent the couplant from splashing due to shaking when the ultrasonic probe is working, which will affect the imaging effect of the probe and pollute the sterile environment. The inner diameter of the rubber sealing ring is large enough for the ultrasonic probe to pass through.

Preferably, the bottom of the couplant box is made of polyurethane material with a thickness of 0.05-0.15mm.

Preferably, the upper end of the puncture frame is provided with an arc-shaped hole, the front end of a positioning rod passes through the arc-shaped hole and is connected to the upper part of the puncture limit tube, and the rear end of the positioning rod is connected to the limit locking knob through threads; the lower end of the puncture limit tube Connect with the lower end of the puncture frame. The adjustment of the puncture position is facilitated by the arc-shaped hole and the limit locking knob.

Preferably, a marking tube is also provided. When in use, the marking tube passes through the puncture limiting tube for pre-positioning; the upper end of the marking tube is provided with a handle; the outer diameter of the marking tube is smaller than the puncturing limiting tube. The inner diameter of the tube, the outer diameter of the handle of the marking tube is greater than the inner diameter of the puncture limit tube.

Preferably, the ultrasonic probe mounting frame is provided with a puncture frame slot, and the puncture frame is provided with a block that cooperates with the slot to achieve snap-in; the puncture frame slot is also provided with a slot for reinforcement Locking knob for block connection. The locking knob adopts a screw, and the screw passes through the slot and is threadedly connected with the slot, and by rotating the screw, the depth of the screw entering the slot is adjusted; the depth of the screw entering the slot is deepened, and the block extending into the slot is pressed; or Rotate the screw in the opposite direction, so that the depth of the screw entering the clamping groove decreases, and accordingly, the force of the screw pressing the clamping block decreases.

Preferably, the mounting bracket is a rectangular frame; one end of the long side of the rectangular frame is connected to the short side of one side through a rotating shaft, and the other end is provided with a locking notch; the front end of a locking rod passes through the locking notch to connect with the other The side short side is pivotally connected, and the rear end of the locking rod is connected with the locking knob through threads. The installation of the ultrasonic probe is facilitated by locking the notch and the locking knob.

Preferably, the short side of the rectangular frame is provided with a mounting bracket slot, and the couplant box is a rectangular box-shaped structure, and the inner wall of the short side of the rectangular box-shaped structure is provided with a couplant box block; the rectangular frame and The rectangular box-shaped structure realizes card connection through card slots and card blocks.

Preferably, the longitudinal section of the couplant box block is a right-angled trapezoid, and when the couplant box block is arranged on the inner surface of the couplant box, the hypotenuse side of the right-angled trapezoid faces the opening of the couplant box. The card slot is rectangular, and when the card block is connected to the card slot, since the longitudinal section of the card block is a right-angled trapezoid and the card slot first passes through the hypotenuse of the right-angle trapezoid, the hypotenuse of the right-angle trapezoid is the excessive chamfering of the card block , it is faster to connect and install the card slot.

During operation, the ultrasonic probe is fixed by the ultrasonic probe mounting frame: loosen the locking knob of the mounting frame, take out the locking rod from the locking slot, then place the ultrasonic probe in the mounting frame, pass through the mounting frame, and make the ultrasonic The length of the probe protruding from the mounting frame is moderate. When the ultrasonic probe is placed in the couplant box, there is a certain gap between the ultrasonic probe and the bottom of the couplant for holding the couplant. Put the probe locking rod into the locking notch, and tighten the locking knob, the ultrasound probe is fixed. Inject an appropriate amount of couplant into the couplant injection hole of the rubber sealing ring, then pass the fixed probe through the rubber sealing ring, place it in the couplant box, and connect the mounting frame with the couplant through the clamping slot and block. reliable. The rubber sealing ring can prevent the couplant from splashing due to shaking when the ultrasonic probe is working, which will affect the imaging effect of the probe and pollute the sterile environment. During operation, when the target blood vessel is selected by ultrasound, the groove is just above the target blood vessel, and the marking tube is used to try to press the local skin along different angles within the range of the positioning groove, and the changes of the blood vessel after compression are observed by ultrasound. To determine the best puncture direction and angle. Then insert the needle for anesthesia and puncture along the direction and angle just determined. During the process of anesthesia and puncture, the ultrasound probe is not removed, which is equivalent to operating under direct vision. During operation, the puncture needle does not pass through any part of this setting, but only enters the needle within the range of the positioning groove and along the angle of the marking tube. At this time, the probe is still monitoring the position of the blood vessel and the needle, so it can be seen directly The lower puncture ensures the success rate of puncture.

It can be understood that the above specific description of the utility model is only used to illustrate the utility model and is not limited to the technical solutions described in the embodiments of the utility model. Those of ordinary skill in the art should understand that the utility model can still be Modifications or equivalent replacements are carried out to achieve the same technical effect; as long as the needs of use are met, they are all within the protection scope of the present utility model.

Claims (8)

1. Ultrasound-guided central venous puncture auxiliary device, comprising an ultrasonic probe mounting frame and a coupling agent box, characterized in that the ultrasonic probe mounting frame is detachably connected to the coupling agent box; the ultrasonic probe mounting frame is adjacent to two sides Each is provided with a puncture frame, and the puncture frame is detachably connected to the ultrasonic probe mounting frame; After the ultrasonic probe mounting frame is connected to the couplant box, an arc-shaped positioning groove suitable for entering a puncture needle is provided under each puncture frame and on the bottom of the outer wall of the couplant box; A rubber sealing ring is arranged around the inner wall of the couplant box, and a couplant injection hole for injecting couplant is provided on the rubber sealing ring. 2 . The ultrasonic-guided central venous puncture auxiliary device according to claim 1 , wherein the bottom of the couplant box is made of polyurethane material with a thickness of 0.05-0.15 mm. 3. The ultrasonic-guided central venous puncture auxiliary device according to claim 1, characterized in that: the upper end of the puncture frame is provided with an arc-shaped hole, and the front end of a positioning rod passes through the arc-shaped hole and is connected to the upper part of the puncture limit tube for positioning. The rear end of the rod is connected with the limit lock knob through threads; the lower end of the puncture limit tube is axially connected with the lower end of the puncture frame. 4. The ultrasonic-guided central venous puncture auxiliary device according to claim 1, characterized in that: a marking tube is also provided, and when in use, the marking tube passes through the puncture limit tube; the upper end of the marking tube is provided with a handle, The outer diameter of the tube body of the marking tube is smaller than the inner diameter of the puncture limiting tube, and the outer diameter of the handle of the marking tube is larger than the inner diameter of the puncturing limiting tube. 5. The ultrasonic-guided central venous puncture auxiliary device according to claim 1, characterized in that: the ultrasonic probe mounting frame is provided with a puncture frame card slot, and the puncture frame is provided with a card slot for use in conjunction with the card slot to achieve snap-in block; the slot of the puncture frame is also provided with a locking knob for reinforcing the connection of the block of the slot. 6. The ultrasonic-guided central venous puncture auxiliary device according to claim 1, characterized in that: the ultrasonic probe mounting frame is a rectangular frame; one long side and one end of the rectangular frame are connected to one short side through a rotating shaft, and the other end is set There is a locking notch; the front end of a locking rod passes through the locking notch and is axially connected with the short side on the other side, and the rear end of the locking rod is connected with the locking knob through threads. 7. The ultrasonic-guided central venous puncture auxiliary device according to claim 6, characterized in that: the short side of the rectangular frame is provided with a mounting bracket slot, the coupling agent box is a rectangular box-shaped structure, and the rectangular box The inner wall of the short side of the shaped structure is provided with a couplant box clamping block; the rectangular frame and the rectangular box-like structure are clamped through the clamping groove and the clamping block. 8. The ultrasonic-guided central venous puncture auxiliary device according to claim 7, characterized in that: the longitudinal section of the couplant box block is a right-angled trapezoid, and when the couplant box block is arranged on the inner surface of the couplant box, the right-angle The hypotenuse side of the trapezoid faces the opening of the couplant box.