Marrow cavity puncture fixing device

Abstract

The utility model provides a marrow cavity puncture fixing device, which comprises a main body, a first through hole, a second through hole and a fixing device, the main body is provided with a first through hole penetrating along a first direction, and the first through hole is used for fixing a puncture needle; the bonding device is connected to the main body, and the bonding device is used for being bonded with the skin of a user so as to fix the main body on the skin of the user; the communicating vessel is fixedly connected to the main body, and the communicating vessel is used for connecting the puncture needle and the infusion tube. The main body is fixed on the skin surface of a patient in a bonding mode, the first through hole matched with the puncture needle is formed in the main body, the puncture needle can be more stably fixed on the body of the patient under the constraint of the main body, and the puncture needle is prevented from shaking and falling off when the patient moves. The main body is fixedly connected with the communicating vessel, the puncture needle can be directly connected with the communicating vessel after drilling into the marrow cavity, the infusion tube is connected through the communicating vessel, no communicating vessel needs to be prepared additionally, and use is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a bone marrow cavity puncture and fixation device. Background Technology

[0002] Bone marrow aspiration is an emergency intravenous infusion technique that utilizes vascular access within the bone marrow cavity. A specially designed needle is inserted into the bone marrow cavity of a long bone, and an infusion device is attached to the other end of the needle. The non-collapsed microvenous network within the bone marrow cavity rapidly absorbs the infused fluid and transports it into the systemic circulation. This technique is primarily used to rescue critically ill patients, especially in situations where intravenous access cannot be established and rapid intravenous infusion is required. It provides an alternative lifeline for emergency patients and has extremely high clinical application value.

[0003] Bone marrow aspiration is of great importance in emergency care, but current techniques lack effective needle fixation devices. After a patient's vital signs stabilize slightly, they need to leave the hospital for further examination and treatment. Currently, the main clinical method is to fix the needle inserted into the bone marrow cavity using medical tape. However, this method is not secure enough when the patient is moving around with the needle in place, and there is a risk of the needle and infusion device shifting or dislodging. Utility Model Content

[0004] This invention provides a fixation strap to solve the problem of insecure fixation and easy movement and dislodgement of the medullary cavity puncture needle in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model is implemented as follows:

[0006] This utility model provides a bone marrow cavity puncture and fixation device, comprising:

[0007] The main body has a first through hole extending along a first direction, the first through hole being used to fix the puncture needle;

[0008] An adhesive device is attached to the body and is used to adhere to the user's skin to fix the body to the user's skin;

[0009] A communicating vessel is fixedly connected to the main body and is used to connect the puncture needle and the infusion tube.

[0010] Optionally, the first through hole is a square through hole.

[0011] Optionally, the adhesive device covers the first through hole and extends outside the main body. A second through hole is provided on the adhesive device at a position corresponding to the center of the first through hole. The diameter of the second through hole is smaller than the diameter of the first through hole. The second through hole is used to allow the tip of the puncture needle to pass through.

[0012] Optionally, the adhesive device has an adhesive layer on the side opposite to the main body, the adhesive layer being used to adhere to the user's skin.

[0013] Optionally, the adhesive device further includes a dressing layer disposed on the side of the adhesive device opposite to the main body.

[0014] Optionally, the medullary cavity puncture fixation device further includes a fixation strap connected to the adhesive device, the two ends of the fixation strap being detachably connected.

[0015] Optionally, the fixing strap is one of the following: elastic bandage, Velcro, snap fastener, or pin buckle.

[0016] Optionally, the medullary cavity puncture and fixation device further includes a pull ring, one end of which is connected to the main body and the other end of which is connected to the communicating vessel.

[0017] Optionally, the communicating vessel is a tee pipe, with one closed end of the tee pipe connected to the main body.

[0018] Optionally, the first through hole is provided with a scale along the axial direction, and the main body is provided with a viewing window communicating with the first through hole, the viewing window being used to observe the scale.

[0019] This invention provides a bone marrow cavity puncture and fixation device, comprising: a main body, an adhesive device, and a communicating vessel. The main body is adhered and fixed to the patient's skin surface by the adhesive device. The main body has a first through hole adapted to a puncture needle, which can slide along this hole. One end of the puncture needle penetrates the patient's bone marrow cavity, and the other end connects to an infusion tube, establishing an infusion channel. The puncture needle is more stably fixed to the patient's body under the constraint of the main body, preventing it from shaking and falling off during patient movement. A communicating vessel is fixedly connected to the main body; after the puncture needle enters the bone marrow cavity, it can be directly connected to the communicating vessel, through which the infusion tube is connected, eliminating the need for a separate communicating vessel and making it more convenient to use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the bone marrow cavity puncture and fixation device described in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram showing another bone marrow cavity puncture and fixation device according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram showing the adhesive device including an adhesive layer and a dressing layer in an embodiment of the present invention;

[0023] Figure 4This is a schematic diagram of the bone marrow cavity puncture and fixation device including the fixation strap in an embodiment of the present invention;

[0024] Figure 5 This diagram illustrates the combination of the bone marrow cavity puncture and fixation device and the puncture needle in an embodiment of the present invention.

[0025] Figure 6 This is a schematic diagram showing the combination of the medullary cavity puncture and fixation device and the puncture needle with a viewing window in an embodiment of this utility model.

[0026] Reference numerals: 10: main body; 11: first through hole; 20: adhesive device; 21: adhesive layer; 22: dressing layer; 30: communicating vessel; 31: pull ring; 40: fixing strap; 50: puncture needle. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the fixed scope of the present utility model.

[0028] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0029] This utility model provides a bone marrow cavity puncture and fixation device, comprising: a main body 10, the main body 10 having a first through hole 11 extending along a first direction, the first through hole 11 being used to fix a puncture needle 50; an adhesive device 20, the adhesive device 20 being connected to the main body 10, the adhesive device 20 being used to adhere to the user's skin to fix the main body 10 to the user's skin; and a communicating vessel 30, the communicating vessel 30 being fixedly connected to the main body 10, the communicating vessel 30 being used to connect the puncture needle 50 and the infusion tube.

[0030] The first through-hole 11 extends from one end of the main body 10 to the other end and is used to receive and fix the puncture needle 50. Understandably, the shape and size of the first through-hole 11 are adapted to the puncture needle 50 so that the puncture needle 50 can be inserted into the main body 10 without wobbling. The puncture needle 50 consists of a needle tip for inserting into the bone marrow cavity and a needle handle connected to the infusion tube. During fixation, most of the needle tip is inserted into the body, while the needle handle is exposed outside the skin. The main body 10 mainly fixes the needle handle portion. The shape and size of the first through-hole 11 depend on the shape and size of the needle handle.

[0031] In practical applications, depending on the driving method, the puncture needle 50 can be divided into electric puncture needle 50 and manual puncture needle 50. The needle tips of the two types of puncture needle 50 are basically the same, while the needle handles differ slightly depending on the driving method. The electric puncture needle 50 is used in conjunction with a matching puncture gun. The electric puncture gun has a rotary motor that rotates the puncture needle 50 to drill into the bone marrow cavity. Therefore, the needle handle is a hollow plastic tube used to fit onto the rotating shaft of the rotary motor. The manual puncture needle 50 is equipped with a propulsion component. The propulsion component is manually pressed to fire, propelling the puncture needle 50 into the body. The needle handle and needle tip are an integral structure that abuts against the propulsion component. Currently, some models of manual puncture needle 50 on the market have needle handles with square, polygonal, or other non-rolling shapes to prevent the puncture needle 50 from rotating or deviating during firing. The first through hole 11 is adaptively designed as a square or polygonal shape to restrain the lateral swaying and detachment of the puncture needle 50 while also preventing the puncture needle 50 from rotating in the first through hole 11. The wall of the first through hole 11 is made of soft silicone cotton, which wraps the exposed part of the puncture needle 50, making the needle body more stable and fixing the puncture needle 50 stably on the patient's skin surface, avoiding secondary damage to the patient caused by needle movement during later treatment and rehabilitation.

[0032] The height of the main body 10 depends on the length of the needle handle. The main body 10 is mainly used to fix the needle handle of the puncture needle 50. Its height and the length of the first through hole 11 penetrating the main body 10 are adapted to the length of the needle handle. When using the puncture needle 50 to establish an intravenous access, the needle tip of the puncture needle 50 needs to be inserted into the patient's bone marrow cavity, with the needle handle and part of the needle tip exposed outside the body. The length of the needle handle is 1.5cm. Depending on the patient's actual physical condition, the length of the puncture needle 50 inserted into the body varies, and the length of the exposed part of the puncture needle 50 fluctuates by about 1cm. The height of the main body 10 is preferably 1.5cm, so that most of the needle handle is wrapped in the main body 10, with the end connected to the infusion tube exposed, and a certain adjustment range is reserved.

[0033] In clinical applications, different diameters and lengths of puncture needles are used depending on the patient's age, size, and puncture site. For adults, a thicker and longer puncture needle (25-45 mm in length and 15-18 G in diameter) is typically used to penetrate the thicker cortical bone. For children and infants, a thinner and shorter puncture needle (15 mm in length and 18 G in diameter) is required to avoid penetrating the bone or damaging the growth plate. Furthermore, the length of the puncture needle and the length of the needle handle also vary depending on the puncture site, such as the tibia or humerus. Correspondingly, various models of the intraosseous cavity fixation device are designed to match the model of the puncture needle 50. The length and diameter of the main body 10 and the first through hole 11 are adapted to change. It can achieve a good fixation effect when used with different models of puncture needles 50. It can be produced, sold and used in conjunction with puncture needles 50 and consumables such as sterile cotton, syringes, and infusion tubes. In emergency situations, the complete set of intraosseous cavity puncture needles 50 can be used directly, without the need to prepare related consumables on your own, thus saving rescue time.

[0034] For example, the main body 10 is designed as a cylinder in the figure. In practical applications, the main body 10 can be designed in a more diverse manner. Preferably, the main body 10 can be a variable cross-section column with a diameter that gradually decreases from bottom to top. The bottom is connected to the adhesive device 20 for fixing to the patient's skin, and the top is close to the top of the puncture needle 50. The structure with a smaller top and a larger bottom provides better fixation, and its smooth shape reduces sharp protrusions on the surface of the device, making it less susceptible to interference from external impacts and providing a better user experience.

[0035] The bottom of the main body 10 is connected to an adhesive device 20, which secures the medullary cavity puncture fixation device and the puncture needle 50 to the patient's skin surface by adhesive bonding. The main body 10 is typically made of materials such as silicone or plastic, while the adhesive device 20 can be made of various materials such as textiles, plastics, or sponges. The adhesive device 20 and the main body 10 can be made of the same material and integrally injection molded. The main body 10 and the adhesive device 20 can also be connected by adhesive bonding, pressing, sewing, etc. This utility model does not further limit the specific structure and connection method of the main body 10 and the adhesive device 20. In the case where the main body 10 and the adhesive device 20 are separate structures, in such cases... Figure 2 In the illustrated embodiment, the side of the main body 10 connected to the adhesive device 20 can extend outward to increase the contact area between the main body 10 and the adhesive device 20, prevent the main body 10 from falling off the adhesive device 20, and improve the stability of the medullary cavity puncture fixation device.

[0036] The main body 10 is also fixedly connected to a communicating vessel 30, which is used to connect the needle tube and the infusion tube inside the puncture needle 50. After the puncture is completed, one end of the communicating vessel 30 is connected to the puncture needle 50, and the other end of the communicating vessel 30 can be connected to a syringe or infusion tube for further operation.

[0037] The main body 10, the bonding device 20, and the communicating vessel 30 are designed as a single unit. They are uniformly sterilized and packaged during production, and can be used simply by tearing open the sterile packaging bag. The bone marrow cavity puncture and fixation device in this embodiment also functions to fix the puncture needle 50 and connect the infusion tube. It is convenient and quick to use, which can simplify the bone marrow cavity puncture procedure and save rescue time.

[0038] Optionally, the bonding device 20 covers the first through hole 11 and extends outside the main body 10, and a second through hole is provided on the bonding device 20 at a position corresponding to the center of the first through hole 11.

[0039] like Figure 1 and Figure 2 As shown, the adhesive device 20 extends beyond the main body 10, has a large contact area with the skin, and can be in various shapes such as triangle, square, and circle. The size of the second through hole is at least larger than the size of the puncture needle 50, so that the medullary cavity puncture fixation device can be fitted onto the puncture needle 50 from the needle handle end after the puncture needle 50 is completed.

[0040] Additionally, in some alternative embodiments, the adhesive device 20 has an adhesive layer 21 on the side opposite to the main body 10, the adhesive layer 21 being used to adhere to the user's skin.

[0041] An adhesive layer 21 is provided on the side of the adhesive device 20 that comes into contact with the skin. The adhesive layer 21 is made of medical acrylic adhesive or silicone pressure-sensitive adhesive to ensure that the edge of the adhesive device 20 is sealed, prevent leakage, and reduce skin irritation, making it especially suitable for sensitive or fragile skin.

[0042] Furthermore, the surface of the adhesive layer 21 can be designed with an easy-tear sticker, which can be easily peeled off to attach the medullary cavity puncture fixation device to the patient's skin during use.

[0043] In addition, such as Figure 3 and Figure 4 As shown, in some optional embodiments, the adhesive device 20 further includes a dressing layer 22 disposed on the side of the adhesive layer 21 opposite to the body 10.

[0044] The adhesive device 20 in this embodiment has a multi-layer structure, consisting of at least an adhesive layer 21 and a dressing layer 22. The adhesive layer 21 is used for bonding and fixing, while the dressing layer 22 is used for wound care after puncture. The adhesive layer 21 covers the dressing layer 22 and extends beyond it to adhere and seal the edges of the dressing. Specifically, the adhesive device 20 can use a foam dressing, consisting of a contact layer, an absorbent layer, an adhesive layer 21, and a backing layer. The contact layer is in direct contact with the skin and is made of materials such as silicone, soft polyurethane film, or low-adhesion non-woven fabric to avoid adhesion to the wound, reduce secondary damage during dressing changes, provide breathability and moisture permeability, and undergo antibacterial treatment to inhibit bacterial growth and prevent post-puncture wound infection. The absorbent layer is used to absorb exudate from the wound and is made of hydrophilic polyurethane foam material. Its microporous structure enables efficient gas exchange and absorbs exudate from the puncture wound, preventing skin maceration. The soft foam also reduces friction on the wound from external pressure. The adhesive layer 21 has a larger area than the contact layer and absorbent layer, and its edges are in direct contact with the skin. Using medical-grade acrylic adhesive or silicone pressure-sensitive adhesive, the dressing layer 22 is adhered to the skin surface, ensuring a sealed edge to prevent leakage and reduce the risk of edge peeling. The elastic non-woven fabric base of the backing layer can deform elastically with the skin and, in conjunction with the sealing strip design, prevents adhesive layer failure caused by the penetration of sweat, blood, and other bodily fluids. The dressing layer 22 protects and seals the wound during bone marrow aspiration and fluid resuscitation, preventing potential bone marrow infection that could result from an open bone marrow cavity.

[0045] Optionally, since the adhesive device 20 has a multi-layer structure, the main body 10 can be partially embedded in a certain layer inside the adhesive device 20 to further increase the connection strength and prevent the main body 10 from loosening from the adhesive device 20.

[0046] In addition, such as Figure 4 As shown, in some optional embodiments, the medullary cavity puncture fixation device further includes a fixation strap 40, which is connected to the adhesive device 20, and the two ends of the fixation strap 40 are detachably connected.

[0047] The tibia and humerus are the most commonly chosen puncture sites for medullary cavity aspiration. These sites are located around joints and are subject to frequent movement, increasing the risk of adhesive layer 21 failure. In this embodiment, a fixation strap 40 is added to the medullary cavity aspiration fixation device. After adhesive fixation is completed, the fixation strap 40 is tied to the patient's leg or shoulder for further fixation, preventing edge peeling, incomplete sealing, and detachment of the adhesive layer 21 due to decreased adhesion over time.

[0048] In some alternative embodiments, the fixing strap 40 is one of the following: elastic bandage, Velcro, snap fastener, or pin buckle. This embodiment does not specifically limit the number or structure of the fixing straps 40; this is merely illustrative.

[0049] In some alternative embodiments, the medullary cavity puncture and fixation device also includes a pull ring 31, one end of which is connected to the main body 10 and the other end of which is connected to the communicating vessel 30.

[0050] The communicating vessel 30 is fixed to the main body 10 by a pull ring 31. The length of the pull ring 31 is sufficient to allow the other end of the communicating vessel 30 to be connected to the needle tube of the puncture needle 50. The pull ring 31 also has a certain curvature and is arranged around the main body 10 to guide the communicating vessel 30 to be connected to the puncture needle 50 during use.

[0051] Optionally, the communicating vessel 30 is a tee pipe, with one closed end of the tee pipe connected to the main body 10.

[0052] In addition, in some optional embodiments, the first through hole 11 is provided with a scale along the axial direction, and the main body 10 is provided with a viewing window that communicates with the first through hole 11. The viewing window is used to observe the scale.

[0053] like Figure 6 In the illustrated embodiment, the main body 10 is made of transparent plastic, providing good visibility. Medical personnel can directly observe the puncture status of the puncture needle 50 inserted into the first through-hole 11 through the transparent main body 10, and can promptly detect any instances of needle slippage or loosening. The first through-hole 11 is marked with graduations, allowing for easy determination of the insertion depth of the puncture needle 50 by observing the position of the needle handle, thereby determining whether the puncture needle 50 has penetrated the bone marrow cavity and whether the puncture needle 50 has moved.

[0054] The specific steps for performing bone marrow cavity puncture using the bone marrow cavity puncture and fixation device provided in this embodiment of the invention are as follows:

[0055] First, determine the puncture site. Select a suitable puncture site based on the intended location and perform aseptic disinfection, including three routine skin disinfections. Remove the puncture needle 50 and prepare for puncture. Depending on the specific model of the puncture needle 50 purchased, an electric puncture gun or a manual puncture device can be used. After the puncture needle 50 is inserted into the body, remove the puncture device and manually rotate the puncture needle 50 to adjust the puncture depth. Remove the needle core from the puncture needle 50 to expose the needle tube. Aspirate bone marrow fluid using a syringe, confirming successful puncture. Inject anesthetic for local anesthesia and flush the bone marrow cavity with saline solution. Place the bone marrow cavity fixation device over the puncture needle 50. Remove the adhesive label from the dressing to attach the device to the body area where the puncture needle 50 is located. Wrap the fixation strap 40 of the device around the patient's limb for secure fixation. Insert the communicating vessel 30 on the medullary cavity puncture and fixation device into the needle tube of the puncture needle 50, connect the infusion tube, and establish an intravenous access for fluid resuscitation.

[0056] This invention provides a bone marrow cavity puncture and fixation device, comprising: a main body, an adhesive device, and a communicating vessel. The main body is adhered and fixed to the patient's skin surface by the adhesive device. The main body has a first through hole adapted to a puncture needle, which can slide along this hole. One end of the puncture needle is inserted into the patient's bone marrow cavity, and the other end is connected to an infusion tube to establish an infusion channel. The puncture needle is more stably fixed to the patient's body under the constraint of the main body, preventing it from shaking and falling off during patient movement. A communicating vessel is fixedly connected to the main body. After the puncture needle enters the bone marrow cavity, it can be directly connected to the communicating vessel, through which the infusion tube is connected, eliminating the need for a separate communicating vessel and making it more convenient to use. The operation steps of this device are simple and clear. Medical personnel can quickly complete bone marrow cavity puncture and fixation by simply following the instructions, simplifying the procedure, shortening emergency time, and reducing operational difficulty and time costs. This device employs a more stable fixation method and simplified operating procedures, and fully considers the potential for infection after bone marrow aspiration. The puncture wound is sterilized and sealed for protection, reducing patient discomfort after the procedure. The integrated design of the device makes the puncture needle more stable, and the stable fixation method avoids the risk of catheter dislodgement after bone marrow aspiration. It provides a new and effective emergency medical tool, reducing the occurrence of catheter dislodgement events.

[0057] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0058] Although alternative embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make further changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the alternative embodiments as well as all changes and modifications falling within the scope of the present invention.

[0059] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used merely to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or terminal device that includes that element.

[0060] The technical solution provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the principle and implementation of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A bone marrow cavity puncture and fixation device, characterized in that, include: The main body (10) has a first through hole (11) extending along a first direction, the first through hole (11) being used to fix the puncture needle (50); An adhesive device (20) is connected to the body (10) and is used to adhere to the user's skin to fix the body (10) to the user's skin. A communicating vessel (30) is fixedly connected to the main body (10) and is used to connect the puncture needle (50) and the infusion tube.

2. The bone marrow cavity puncture and fixation device according to claim 1, characterized in that, The first through hole (11) is a square through hole.

3. The bone marrow cavity puncture and fixation device according to claim 1, characterized in that, The adhesive device (20) covers the first through hole (11) and extends to the outside of the main body (10). A second through hole is provided on the adhesive device (20) at a position corresponding to the first through hole (11).

4. The bone marrow cavity puncture and fixation device according to claim 3, characterized in that, The adhesive device (20) has an adhesive layer (21) on the side opposite to the main body (10), and the adhesive layer (21) is used to adhere to the user's skin.

5. The bone marrow cavity puncture and fixation device according to claim 4, characterized in that, The adhesive device (20) further includes a dressing layer (22) disposed on the side of the adhesive layer (21) away from the main body (10).

6. The bone marrow cavity puncture and fixation device according to claim 1, characterized in that, The medullary cavity puncture fixation device also includes a fixation strap (40), which is connected to the adhesive device (20), and the two ends of the fixation strap (40) are detachably connected.

7. The bone marrow cavity puncture and fixation device according to claim 6, characterized in that, The fixing strap (40) is one of the following: elastic bandage, Velcro, snap fastener, or pin buckle.

8. The bone marrow cavity puncture and fixation device according to claim 1, characterized in that, The medullary cavity puncture and fixation device also includes a pull ring (31), one end of which is connected to the main body (10) and the other end is connected to the communicating vessel (30).

9. The bone marrow cavity puncture and fixation device according to claim 1, characterized in that, The communicating vessel (30) is a three-way pipe, and the closed end of the three-way pipe is connected to the main body (10).

10. The bone marrow cavity puncture and fixation device according to claim 1, characterized in that, The first through hole (11) has a scale along the axial direction, and the main body (10) has a viewing window that communicates with the first through hole (11). The viewing window is used to observe the scale.

Images