JPH0323868A - Percataneous terminal - Google Patents

Abstract

PURPOSE:To eliminate possibility generating damage due to the application of external force or exerting adverse effect on the hypodermis by providing the planar part applied to the hypodermis to the part which embedded and stayed in a living body other than the region bonded to epidermal tissue and forming one of the parts connecting said planar part and the bonding part from an elastic material. CONSTITUTION:A subcataneous terminal 1 is embedded under the skin in such a state that a part of the communication member 2 bonded to epidermal tissue 7b protrudes from the epidermal tissue 7b of a living body 7 and the under surface of a fixing member 3 is applied to the epidermal tissue 7b. The fixing member 3 is sutured and fixed to the epidermal tissue 7a by passing suture yarns 8 through the small holes 9 provided to said member 3. That is, the fixing member 3 constitutes the planar member applied to the hypodermis 7a. since the fixing member 3 is formed from an elastic member such as silicone rubber, when external force is applied to the subcataneous terminal 1 by striking a thing to the terminal or drawing the terminal, the external force is absorbed by the elasticity of the fixing member itself to eliminate possibility damaging the subcataneous terminal or exterting adverse effect on the living body 7 by the application of a strong impact onto the hypodermis 7a.

Description

[Detailed Description of the Invention] [Utilization of the present invention is for extracting biological information such as blood pressure and blood flow rate of 0.1J, or as an inlet for blood transfusion, transfusion, etc. The present invention relates to a percutaneous terminal that is placed at the internal and external boundaries of a living body to collect blood, body fluids, etc., or to supply signals and power to artificial organs installed in the living body.

[Prior Art] As this type of percutaneous terminal, for example, Japanese Patent Application Laid-Open No. 1983-1999
1. Publication No. 4 6 6 6 2 or JP-A-609
It is known from Japanese Patent No. 2768=5.

In addition, percutaneous terminals are placed between the inside and outside of a living body to communicate between the inside and outside of the living body, but in order to prevent infection from the part that communicates between the inside and outside of the living body, the percutaneous terminal body is placed between the inside and outside of the living body. It needs to be in close contact.

For this reason, the main body of the transdermal treatment is β-TCP (β-tricalcium phosphate), hytroquine apatite, bioglass. 5. Made of NMa or a biocompatible ceramic material that has the property of adhering closely to living tissue.

In addition, in the percutaneous terminal of Japanese Patent Application No. 1962-2961 63, ceramics H}. : Collagen is attached to the outer surface of the main body consisting of {114} to enhance the bonding or close contact between the epidermal tissue and the percutaneous terminal, and prevent bacterial infection from the joint site. I'm trying to cheat.

[The section on which the invention is trying to settle the bill] However, the main bodies of the transdermal terminals since 'DFT have all been made of ceramic material. The ceramic material is a brittle +-1 material and has a film-like property.

Therefore, if an object hits the percutaneous end -r- and an external force is applied, there is a risk that the percutaneous terminal will be damaged.

If the percutaneous terminal is damaged, the subcutaneous tissue will be affected! 1-Shiru.

Furthermore, even if the percutaneous terminal does not break, the ceramic H material used in the percutaneous terminal body is hard, so any external force applied to the percutaneous terminal will not be absorbed and will be applied directly to the subcutaneous tissue. It is believed that it may have an adverse effect on the subcutaneous tissue.

The present invention has been made to solve the above problem, and its purpose is to prevent damage or adverse effects on the subcutaneous tissue when external force is applied. The purpose of the present invention is to provide a percutaneous terminal with less risk of injury.

? Means and Effects for Solving the Problems] In order to solve the above problem, the present invention provides a method for implanting and indwelling a terminal in a living body through the epidermal tissue of a cow, with a part of the terminal body protruding outside the body. In the percutaneous terminal, the terminal body is made of biocompatible ceramic material at least at the joint part that joins with the epidermal tissue of the living body, and is implanted in the body at least at the part where it joins with the epidermal tissue. At least one of the planar portion or a portion connecting the planar portion and the joint portion is formed of an elastic material.

In general, damage to the percutaneous terminal due to external force,
In order to prevent adverse effects on living tissue, it is effective to construct the percutaneous terminal with a material that can absorb the clamping force.

However, by placing the percutaneous terminal close to body tissue, infection can be prevented.
In order to achieve this, it is necessary to coat the percutaneous terminal with a biocompatible ceramic material that has the property of adhering or adhering directly to the cow's body. Infection caused by small needles, etc. occurs when bacteria and the like invade the skin through the contact area between the epidermal tissue and the percutaneous terminal when the skin, especially the epidermal tissue, and the percutaneous terminal are insufficiently bonded. Because it is caused by
In order to prevent the invasion of bacteria, the contact area between the epidermal tissue and the skin contact area must be made of a ceramic material that is compatible with the living body and has a viscous or microscopic property. .

By the way, the area other than the contact area between the epidermal tissue and the percutaneous terminal, for example, the subcutaneous implantation area, does not need to be directly connected to the living body if it is made of a biocompatible material. The present invention has been made with this point in mind, and the part that comes into contact with the epidermal tissue is made of a biocompatible ceramic material that has the property of directly interfacing with the living body. At least a portion of the non-contact area is made of an elastic material that absorbs external force.

[Embodiment] Figures 1 and 2 show the first embodiment of the wooden invention. Terminal body 1a in subcutaneous terminal 1 of this length example
5 consists of a substantially cylindrical communicating portion +A2 and a disk-shaped fixing portion 3 fitted over the lower outer periphery of the communicating portion 2.

The communication part 2 is made of β-TCP (tricarunium phosphate),
It is made of biocompatible ceramic materials such as tetracalcium phosphate, hydroquinapatite, and hyoglas, which have the property of directly bonding with living organisms. A communication hole 4 for passing lead wires, catheters, etc. is provided approximately at the center of the communication portion 2. As shown in FIG.

Further, the fixing part support 3 is formed into a disk shape using a biocompatible elastic material such as silicone rubber, polyurethane elastomer, fluororubber, polyethylene, or polyacetal. A hole 6 is formed in the center of the fixed part 3 to fit into a circumferential groove 5 formed on the outer periphery of the second communicating part 2. Further, near the outer periphery of the fixing member 3, a plurality of small holes 9 are provided through which the suture thread 8 is passed when sutured and fixed to the subcutaneous tissue 7a of the living body 7, which will be described later.

FIG. 2 shows the state in which this subcutaneous terminal is attached to a living body 7. The subcutaneous end T-1 is the epidermis layer 6? Part of the communicating part 2 that joins b is attached to the epidermis #W of the living body 7.
It does not protrude from 7b, but is buried in the skin.

The lower part of the prisoner part month 13 is in the subcutaneous tissue 7a ゛-1te 1:)
It will be done.

Then, thread the 1' combination thread 8 through the small hole 9 provided in the subcutaneous assembly i7ai. : Fin match is fixed. In other words,
''2kikokubukan 3 +,! 77 I'm exhausted.

In addition, in this flattened state, the communication hole 4 of the communication part +12 has a line 1 and a line 11 for a catheter, etc.
, for example, if the wire is 10 or wire 10, it should be connected in an airtight, 1-wire condition.
j has been done. In other words, the inside and outside of the living body 7 can be communicated by using the example of the communication part with the line 1 and the mouth.

By the way, the communication department month 2 is /-1:. Since it is made of ceramic material that is directly bonded to the body 7, its protruding portion tightly adheres to the epidermal tissue 7a, preventing small particles from entering from this portion and preventing infection. can.

In addition, the solid foot part 3 is made of silicone rubber ".9".
Since the transdermal terminal is made of a transparent material, if an external force is applied to the transdermal terminal, such as by hitting an object or pulling it, the external force will be absorbed by the material of the transdermal terminal. ], the risk of damage or giving a large impact to the subcutaneous tissue 7a and adversely affecting the living body 7 is reduced.

According to the above-mentioned article 47, y, it is possible to reduce the risk of infection and prevent damage to the subcutaneous tissue due to external forces, as well as to prevent problems such as the negative effects of external forces on living tissue. 'To watch.

In addition, the fixed part 3 has a biocompatible housing 4A on its outer peripheral surface.
It may also be coated with a material. In addition, fixed part month 3
As shown in FIG.
It may be arranged such that it is disposed at 1.

FIG. 4 shows Masaaki Moto's second embodiment. The terminal body 11a of the subcutaneous terminal 1 in this practical example has the parts corresponding to the communicating part 4i2 and the fixing part 3 made of silicone rubber, polyurethane elastomer, fluoro rubber, polyethylene, polyacetal, etc. The terminal body 11a has a substantially cylindrical joint on the upper part of the terminal body 11a, that is, on the outer periphery of the part that protrudes from the skin when it is placed in the living body 7. 13 years old, it is air-tight and liquid-tight to control one concubine and one skin stone. To this one concubine +4
The material 13 is made of a ceramic material compatible with the cow body 7, which has the property of being directly attached to the cow body 7 of β-TCPS1\Il Login Apatite 1. In addition, this terminal body 1 1. At step a, communicating holes 14 and small holes 15 are provided.

As shown in Figure 4, this percutaneous terminal 1 is implanted under the skin with a part of the junction 13 protruding outside the body from the epidermis fa7b, and the small hole 5 is inserted into the body. Then, it is sutured and fixed to the subcutaneous braid gQ7a using suture thread 18. In addition, a catheter and a lead wire ".+1" can be inserted into the communication hole 4 depending on the purpose of use.

In addition, since the joint portion 13 is made of ceramics and materials that directly connect with the living body, it directly connects with the epidermal tissue 7b, thereby preventing the invasion of bacteria, etc., and preventing infection. . Since the terminal wood body 11a is made of a durable material, even if an external force is applied due to an action such as hitting an object or pulling it, it will absorb the external force with its elasticity and prevent damage to the percutaneous terminal 11. The possibility of adverse effects on the subcutaneous tissue 7a can be reduced.

FIG. 5 shows an example of the husband hW of the button 3 of the present invention. One percutaneous terminal consists of a terminal body 1. 9 a, and a substantially cylindrical communicating portion +4' 20 formed of a biocompatible ceramic material having the property of directly interlocking with a living body;
Similarly, a disk-shaped fixing part 4A21 having a hollow hole 21a formed of a biocompatible ceramic material that directly adheres to the living body is attached to the disk-shaped fixing part 4A21, which maintains biocompatibility. They are connected by a connecting part 22 formed into a shape. The lower outer periphery of the communicating member 20 and the inner periphery of the fixing part support 21 are provided with a corresponding outer periphery for fixing the inner hole edge of the connecting part 22 and the outer periphery to be fitted and integrated. A groove 23 and an inner circumference 24 are formed. A suture hole 25 is formed in the outer peripheral edge of the fixed foot part +J2 in the same manner as in the above case.

As shown in Fig. 5, the percutaneous terminal 9 with this configuration is implanted subcutaneously with a part of the communication part 20 not protruding outside the body from the epidermal tissue 7b, and is sutured using the small hole 25. Thread 26
It is then sutured and fixed to the subcutaneous tissue 7a. In addition, the communication hole 27 of the communication part cover 20 has the following characteristics depending on its usage:
A catheter, Riet wire, etc. can be attached at will.

Here, since the communication member 20 is formed of a ceramic H material that directly adheres to the living body, it directly engages with the epidermal tissue 7b, prevents the invasion of bacteria, etc., and prevents infection. I'll come.

In addition, since the communication part 20 and the fixed part 21 are connected by the connection part JtA 2 2 made of a flexible part, even if an external force is applied to this percutaneous terminal 9, the external force will be suppressed. It is absorbed by the elasticity of the connecting part +4 2 2 and is not transmitted to the fixed part 21 as the jagged part 10 which is effective for the skin 411 weave 7a.

Furthermore, in this example, since the hard part 21 is made of ceramic + 1 material that directly adheres to the living body 7, it is compared with the first and second examples described above. This has improved compatibility with living tissues, such as Re! Even if the doubling thread 26 falls off, it is difficult for the percutaneous end 19 to fall off or develop.

Figure 6 shows the fourth length embodiment of the present invention. The percutaneous terminal main body 30a of the percutaneous terminal 30 in this example of ground loss is made of an elastic material having biocompatibility, and has a communication hole approximately in the center thereof.
31, and a plate-shaped fixed part 33 provided on the periphery of the communicating part 32. There is a penetrating part in the approximate center of the fixed part 33. A hole 34 is formed, and the inner peripheral edge of the insertion hole 34 is fitted into a circumference 35 formed on the lower outer periphery of the communication portion 32.

The fixing part support 33 is fixed by being fitted into a circumference 35 provided on the lower outer periphery of the communication part support 32.

Furthermore, a 111-piece connecting member 36 is fitted onto the upper outer periphery of the 1ti constant part support 33, and this is connected in an airtight and liquid-tight manner.
It is fixed integrally by being fixed. The joint 36 is formed from a biocompatible ceramic material that mates directly with the main body.

In addition, there is a small hole 37 for the suture in the outer periphery of the fixing part 33. It's sunken.

However, in the case of J45 using this percutaneous terminal 30,
As shown in Figure 6, a part of the junction 36 is removed from the epidermal tissue 7b.
The shape-C protruding from the body is implanted under the skin, and is sutured and fixed in the subcutaneous tissue 7a using suture threads 38 using the small hole 37. Incidentally, depending on the use of the catheter, a wire of 1 and a line of π5 can be inserted into the communication hole 3.

Since the joint portion 36 is formed of a ceramic material that is directly joined to the cow's body 7, it prevents the intrusion of the thin part 1'A':'j by directly engaging with the epidermal tissue 7b. ,
Prevent infection.

The communication part +A゛32 of the terminal main body 30a is
Since the percutaneous terminal 30 is made of a flexible material, even if an external force is applied to the percutaneous terminal 30, the external force will be absorbed by the dlii property, preventing damage to the percutaneous terminal 30 and preventing damage to the skin tissue 7a.
It is possible to reduce the impact or risk of occurrence.

] 3 Furthermore, as in the third length embodiment, the subcutaneous fixing part 4-33 is also made of ceramic material that is directly bonded to the living body 7, so that it is less likely to fall off.

In addition, "+j" is used for a part of the terminal body like a double series.
llt property material has /. I = It may be coated with a material that is compatible with the body.

[Effects of the Invention] As explained above, according to the present invention, there is no possibility of bacterial invasion or infection due to direct engagement with the epidermal tissue. Furthermore, since the external force is absorbed when an external force is applied, there is no risk that the percutaneous terminal itself will be damaged or that it will have an adverse effect on living tissue.

Figure 1 is a side sectional view of the subcutaneous terminal, Figure 2 is a side sectional view of the subcutaneous terminal in poor use, and Figure 3 is a side sectional view of the subcutaneous terminal.
Fig. 4 is a side sectional view of the subcutaneous terminal in poor use condition showing an example of failure of the go 52 of the present invention; ]4 Side section RFJ A4 of the usage state of its subcutaneous end showing an example,
FIG. 6 is a side sectional view of a fourth embodiment of the present invention, showing a skin terminal in poor use.

]・Subcutaneous terminal, ]a・Subcutaneous terminal body, Published by 2nd Communication Department, 3
... Fixed Department publication, 7. Bovine body, 7a. Subcutaneous tissue, 7b.. Epidermal tissue, 1].. Subcutaneous terminal, 1. 1 a. Terminal body,
13. Published by Junction Department,] 9 Subcutaneous terminal, 20. Published by Communication Department,
2] - Published by Kosakubu, 22 - Connection part 14, 30 - Subcutaneous terminal, 30a' - Subcutaneous terminal body, 32... Communication part 14, 33
... solid foot part profit, 36. joint part profit.

Claims (1)

[Claims] In a percutaneous terminal that is implanted in a living body through the epidermal tissue of the living body with a part of the terminal main body protruding outside the body,
This terminal main body has at least the joint part that joins with the epidermal tissue of the living body made of a biocompatible ceramic material, and the part that is implanted and indwelled in the living body has a surface that contacts the subcutaneous tissue other than the part that joins with the epidermal tissue. A percutaneous terminal, wherein at least one of the planar portion or a portion connecting the planar portion and the joint portion is made of an elastic material.